Mary Are you sure you're not muddling the companies up? AncestryDNA have very limited tools compared to the other testing companies and you would be much better getting your cousin to test with 23andMe or Family Tree DNA instead. See the autosomal DNA testing comparison chart in the ISOGG Wiki: http://www.isogg.org/wiki/Autosomal_DNA_testing_comparison_chart Whichever company he tests with you would have to get him to share the log in details for the personal page on the company website. Debbie

You can share access from two different accounts. If it is purchased through your account, but they register it, then it will show up in both of your accounts. CeCe Moore www.yourgeneticgenealogist.com > Date: Tue, 29 Oct 2013 07:44:23 -0700 > From: just23gen@gmail.com > To: autosomal-dna@rootsweb.com > Subject: [AUTOSOMAL-DNA] Sharing Ancestry DNA results with test taker (cousin) I should know (or be able to find) the answer to this, but am coming up short. I've a cousin who is willing to take an autosomal test. For a variety of reasons, and given the current tools amongst the various companies, it would be better for me if he were to take AncestryDNA's autosomal test. He's not a genealogist/family historian, though his brother is (and has Ancestry.com trees, although he may not be active). What's the best way for both of us to see his results and matches (I'll be paying for the test)? He may choose to go with 23andme for the all around value to him and his family, but wanted to know what AncestryDNA's sharing capabilities are before I lay out the options. Thank you, Mary

Thanks, all. I'm pretty familiar with all 3 options for test companies, as I have many cousins and friends well covered in all 3. Also, I co-lead the DNA Special Interest group for our local genealogical society so I have to stay pretty current. I agree; all those blogs mentioned are incredibly helpful, as is this group, most often. I'm looking at AncestryDNA because their one edge -- extensive family trees -- is very important in this particular situation. I realize I won't be able to do any chromosome browsing or segment comparisons...I'm just looking for another data point on some colonial New England names. I'll try to get the answer on AncestryDNA. Thanks! On Tue, Oct 29, 2013 at 8:41 AM, bittle1@frontier.com <bittle1@frontier.com>wrote: > Mary, > My opinion is as follows and outlines my preferred approach. > Test with 23andMe, for more in depth information as to testing in the > first place. > Test with Ancestry as they have revised their program and present more > accurate detail as to ethnicity than previous process allowed. > Test with FTdna for maternal and paternal prediction as to Y and MT and > raw data is obtainable. Haplotype and Haplogroup information is invaluable > and join the group that is pertinent to your surnames). I opine that > anything less than 67 markers is simply a waste of money. > Once you have acquainted yourself of the new language involved in genetic > testing results, quite a task, then you will find that your paper genealogy > is confirmed, more so than if, you had not tested at all. > Study all of the information available at all sites, tutorials, etc., and > it would help were you to have a friend who practices genetic biology, or > is a geneticist by trade. A professional. > Read as many blogs as you can and join as many mailing lists as possible. > Read CeCe Moore, Roberta J Estes, Blaine Bettinger?, Diana G Mattheison > blogs and sites. Rootsweb, etc. > I opine that if one is to gain benefit from testing at all, that any > effort must include all 3 that I have mentioned above. Do not read anything > in to the information provided. Realize that an intensive effort is > required, of one who is a novice. Understand, that the results primarily > present information delving all the way back to Africa and forward to 2013. > Five to Ten generations of paper genealogy is not necessarily applied in > the testing results of autosomal for example, in the Ancestrydna results. > Do not test if you are not willing to expend the time and effort to > understand what is presented. > As the databases increase over the next five years the results will > increase 100 fold, so it might be advisable to hold off testing for a > while, however your learning curve will be in place sufficiently to > understand this new language you are learning. > I hope this makes sense to you and let me know if you don't mind. > Sincerely yours, > Richard Bittle > > > > > >________________________________ > > From: Mary E Hall <just23gen@gmail.com> > >To: autosomal-dna@rootsweb.com > >Sent: Tuesday, October 29, 2013 9:44 AM > >Subject: [AUTOSOMAL-DNA] Sharing Ancestry DNA results with test taker > (cousin) > > > > > >I should know (or be able to find) the answer to this, but am coming up > >short. > > > >I've a cousin who is willing to take an autosomal test. For a variety of > >reasons, and given the current tools amongst the various companies, it > >would be better for me if he were to take AncestryDNA's autosomal test. > >He's not a genealogist/family historian, though his brother is (and > >has Ancestry.com trees, although he may not be active). > > > >What's the best way for both of us to see his results and matches (I'll be > >paying for the test)? He may choose to go with 23andme for the all around > >value to him and his family, but wanted to know what AncestryDNA's sharing > >capabilities are before I lay out the options. > > > >Thank you, > > > >Mary > > > > > >______________________________ > >For answers to Frequently Asked Questions about mailing lists, please see: > >http://dgmweb.net/MailingListFAQs.html > > > > > >------------------------------- > >To unsubscribe from the list, please send an email to > AUTOSOMAL-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message > > > > > > > > > ______________________________ > For answers to Frequently Asked Questions about mailing lists, please see: > http://dgmweb.net/MailingListFAQs.html > > > ------------------------------- > To unsubscribe from the list, please send an email to > AUTOSOMAL-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message >

Mary,  My opinion is as follows and outlines my preferred approach.  Test with 23andMe, for more in depth information as to testing in the first place.  Test with Ancestry as they have revised their program and present more accurate detail as to ethnicity than previous process allowed.  Test with FTdna for maternal and paternal prediction as to Y and MT and raw data is obtainable. Haplotype and Haplogroup information is invaluable and join the group that is pertinent to your surnames). I opine that anything less than 67 markers is simply a waste of money.  Once you have acquainted yourself of the new language involved in genetic testing results, quite a task, then you will find that your paper genealogy is confirmed, more so than if, you had not tested at all.  Study all of the information available at all sites, tutorials, etc., and it would help were you to have a friend who practices genetic biology, or is a geneticist by trade. A professional.  Read as many blogs as you can and join as many mailing lists as possible. Read CeCe Moore, Roberta J Estes, Blaine Bettinger?, Diana G Mattheison blogs and sites. Rootsweb, etc.  I opine that if one is to gain benefit from testing at all, that any effort must include all 3 that I have mentioned above. Do not read anything in to the information provided. Realize that an intensive effort is required, of one who is a novice. Understand, that the results primarily present information delving all the way back to Africa and forward to 2013. Five to Ten generations of paper genealogy is not necessarily applied in the testing results of autosomal for example, in the Ancestrydna results.  Do not test if you are not willing to expend the time and effort to understand what is presented.  As the databases increase over the next five years the results will increase 100 fold, so it might be advisable to hold off testing for a while, however your learning curve will be in place sufficiently to understand this new language you are learning.  I hope this makes sense to you and let me know if you don't mind.  Sincerely yours,  Richard Bittle >________________________________ > From: Mary E Hall <just23gen@gmail.com> >To: autosomal-dna@rootsweb.com >Sent: Tuesday, October 29, 2013 9:44 AM >Subject: [AUTOSOMAL-DNA] Sharing Ancestry DNA results with test taker (cousin) > > >I should know (or be able to find) the answer to this, but am coming up >short. > >I've a cousin who is willing to take an autosomal test.  For a variety of >reasons, and given the current tools amongst the various companies,  it >would be better for me if he were to take AncestryDNA's autosomal test. >He's not a genealogist/family historian, though his brother is (and >has Ancestry.com trees, although he may not be active). > >What's the best way for both of us to see his results and matches (I'll be >paying for the test)?  He may choose to go with 23andme for the all around >value to him and his family, but wanted to know what AncestryDNA's sharing >capabilities are before I lay out the options. > >Thank you, > >Mary > > >______________________________ >For answers to Frequently Asked Questions about mailing lists, please see: >http://dgmweb.net/MailingListFAQs.html > > >------------------------------- >To unsubscribe from the list, please send an email to AUTOSOMAL-DNA-request@rootsweb.com with the word 'unsubscribe' without the quotes in the subject and the body of the message > > >

I should know (or be able to find) the answer to this, but am coming up short. I've a cousin who is willing to take an autosomal test. For a variety of reasons, and given the current tools amongst the various companies, it would be better for me if he were to take AncestryDNA's autosomal test. He's not a genealogist/family historian, though his brother is (and has Ancestry.com trees, although he may not be active). What's the best way for both of us to see his results and matches (I'll be paying for the test)? He may choose to go with 23andme for the all around value to him and his family, but wanted to know what AncestryDNA's sharing capabilities are before I lay out the options. Thank you, Mary

Please join Shannon Christmas and me for a radio show in one hour on Autosomal DNA: http://www.blogtalkradio.com/bernicebennett/2013/10/28/strategies-for-using-autosomal-dna-part-ii CeCe Moore www.yourgeneticgenealogist.com

Thanks Tim Karen On Mon, Oct 21, 2013 at 6:37 PM, Tim Janzen <tjanzen@comcast.net> wrote: > If your dad shares 3380.68 cMs with you then your mother will share the > same > amount. Yes, the areas not showing DNA are regions of the chromosome that > aren't being sequenced for various reasons. Such regions are generally > near > centromeres or are on regions that are difficult to sequence. In order to > reconstruct as much of your mom's DNA as feasible you will need to phase > your dad's DNA using both your data and your sibling's data. > Reconstructing > your mom's DNA can be a somewhat complicated process, but you should be > able > to reconstruct about 75% or so of it. > Tim > > -----Original Message----- > From: autosomal-dna-bounces@rootsweb.com > [mailto:autosomal-dna-bounces@rootsweb.com] On Behalf Of Karen Hodges > Sent: Sunday, October 20, 2013 11:50 PM > To: autosomal-dna@rootsweb.com > Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them > > Thanks Tim. > > I tested with FT DNA. I have just checked Dad against me on the family > finder chromosome file and the total is 3380.68cM's. Which means > 3380.32cM's from Mum's or should this also be 3380.68cMs? The places not > showing DNA are non read areas of the chromosome? So Mum's DNA should takes > up the same area in the display screen as Dad's and this is how I know what > I have found when I test siblings and how much is missing? > > Thanks > Karen > > > > ______________________________ > For answers to Frequently Asked Questions about mailing lists, please see: > http://dgmweb.net/MailingListFAQs.html > > > ------------------------------- > To unsubscribe from the list, please send an email to > AUTOSOMAL-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message >

Thanks Tim. I tested with FT DNA. I have just checked Dad against me on the family finder chromosome file and the total is 3380.68cM's. Which means 3380.32cM's from Mum's or should this also be 3380.68cMs? The places not showing DNA are non read areas of the chromosome? So Mum's DNA should takes up the same area in the display screen as Dad's and this is how I know what I have found when I test siblings and how much is missing? Thanks Karen On Mon, Oct 21, 2013 at 4:29 PM, Tim Janzen <tjanzen@comcast.net> wrote: > Dear Karen, > Based on my calculations there are a total of 7098 cMs of autosomal DNA in > 23andMe and 6761 cMs in FTDNA's Family Finder. If you have tested at > 23andMe you will have about 3549 cMs of your dad's data and if you have > tested at FTDNA then you will have about 3380.5 cMs of your dad's data. > Tim Janzen > > -----Original Message----- > From: autosomal-dna-bounces@rootsweb.com > [mailto:autosomal-dna-bounces@rootsweb.com] On Behalf Of Karen Hodges > Sent: Sunday, October 20, 2013 10:05 PM > To: autosomal-dna@rootsweb.com > Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them > > This has probably been asked before so forgive me if it has but what is the > total amount of cMs that makes up a person? To work out Dad's percentage > that I have, do I divide the amount I have in common with him by half the > amount of cMs in a person? > > Karen > > > > ______________________________ > For answers to Frequently Asked Questions about mailing lists, please see: > http://dgmweb.net/MailingListFAQs.html > > > ------------------------------- > To unsubscribe from the list, please send an email to > AUTOSOMAL-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message >

Thanks for posting this Jim and Tim 1 50 2 75 3 87.5 4 93.75 I have three siblings so their DNA with mine will almost give me Mum's. This has probably been asked before so forgive me if it has but what is the total amount of cMs that makes up a person? To work out Dad's percentage that I have, do I divide the amount I have in common with him by half the amount of cMs in a person? Karen Karen On Mon, Oct 21, 2013 at 10:28 AM, Tim Janzen <tjanzen@comcast.net> wrote: > Dear Karla, > Jim Bartlett gave a very nice explanation to your question earlier > today. I thought I would give you the statistics as to what percentage of > your parents' DNA you can expect to capture if you test a varying number of > the children of those parents as follows: > > 1 50 > 2 75 > 3 87.5 > 4 93.75 > 5 96.875 > 6 98.4375 > 7 99.21875 > 8 99.609375 > 9 99.8046875 > 10 99.90234375 > 11 99.95117188 > 12 99.97558594 > 13 99.98779297 > 14 99.99389648 > 15 99.99694824 > 16 99.99847412 > 17 99.99923706 > 18 99.99961853 > 19 99.99980927 > 20 99.99990463 > > I can run estimates for couples who have more than 20 children if > necessary! > > > Sincerely, > Tim Janzen > > -----Original Message----- > From: autosomal-dna-bounces@rootsweb.com > [mailto:autosomal-dna-bounces@rootsweb.com] On Behalf Of Karla Huebner > Sent: Sunday, October 20, 2013 7:28 AM > To: autosomal-dna@rootsweb.com > Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them > > What would the probability for just two children (since I have only one > sibling, and we didn't test my father before he died)? Or can I actually > tell the true percentage by looking at 23andMe's chart of our half-and-full > identical areas? > > Karla > > > > ______________________________ > For answers to Frequently Asked Questions about mailing lists, please see: > http://dgmweb.net/MailingListFAQs.html > > > ------------------------------- > To unsubscribe from the list, please send an email to > AUTOSOMAL-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message >

An interesting blog post from Graham Coop: http://gcbias.org/2013/10/20/how-much-of-your-genome-do-you-inherit-from-a-p articular-grandparent/ Debbie

If your dad shares 3380.68 cMs with you then your mother will share the same amount. Yes, the areas not showing DNA are regions of the chromosome that aren't being sequenced for various reasons. Such regions are generally near centromeres or are on regions that are difficult to sequence. In order to reconstruct as much of your mom's DNA as feasible you will need to phase your dad's DNA using both your data and your sibling's data. Reconstructing your mom's DNA can be a somewhat complicated process, but you should be able to reconstruct about 75% or so of it. Tim -----Original Message----- From: autosomal-dna-bounces@rootsweb.com [mailto:autosomal-dna-bounces@rootsweb.com] On Behalf Of Karen Hodges Sent: Sunday, October 20, 2013 11:50 PM To: autosomal-dna@rootsweb.com Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them Thanks Tim. I tested with FT DNA. I have just checked Dad against me on the family finder chromosome file and the total is 3380.68cM's. Which means 3380.32cM's from Mum's or should this also be 3380.68cMs? The places not showing DNA are non read areas of the chromosome? So Mum's DNA should takes up the same area in the display screen as Dad's and this is how I know what I have found when I test siblings and how much is missing? Thanks Karen

Dear Karen, Based on my calculations there are a total of 7098 cMs of autosomal DNA in 23andMe and 6761 cMs in FTDNA's Family Finder. If you have tested at 23andMe you will have about 3549 cMs of your dad's data and if you have tested at FTDNA then you will have about 3380.5 cMs of your dad's data. Tim Janzen -----Original Message----- From: autosomal-dna-bounces@rootsweb.com [mailto:autosomal-dna-bounces@rootsweb.com] On Behalf Of Karen Hodges Sent: Sunday, October 20, 2013 10:05 PM To: autosomal-dna@rootsweb.com Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them This has probably been asked before so forgive me if it has but what is the total amount of cMs that makes up a person? To work out Dad's percentage that I have, do I divide the amount I have in common with him by half the amount of cMs in a person? Karen

Wow! Thanks Jim, Elizabeth, and Tim for the enlightening details on this. Karla On Sun, Oct 20, 2013 at 7:28 PM, Tim Janzen <tjanzen@comcast.net> wrote: > Dear Karla, > Jim Bartlett gave a very nice explanation to your question earlier > today. I thought I would give you the statistics as to what percentage of > your parents' DNA you can expect to capture if you test a varying number of > the children of those parents as follows: > > 1 50 > 2 75 > 3 87.5 > 4 93.75 > 5 96.875 > 6 98.4375 > 7 99.21875 > 8 99.609375 > 9 99.8046875 > 10 99.90234375 > 11 99.95117188 > 12 99.97558594 > 13 99.98779297 > 14 99.99389648 > 15 99.99694824 > 16 99.99847412 > 17 99.99923706 > 18 99.99961853 > 19 99.99980927 > 20 99.99990463 > > I can run estimates for couples who have more than 20 children if > necessary! > > > Sincerely, > Tim Janzen > >

On Oct 20, 2013, at 12:36 PM, Jim Bartlett wrote: > Karla > > Each child gets exactly 1/2 of each parent's atDNA. Each parent has 2 of each chromosome and through recombination makes 1 that is passed to each child. A second child also has 1/2 of each parent's atDNA - some of this overlaps the first child; and some is part of the atDNA that the first child didn't get from the parents. On average, you and each sibling will overlap 50%; and your sibling will get half of the atDNA from your parents that you didn't get. So between you, on average, you will get 75% (3/4) of your parent's atDNA. So each of your parent's atDNA will go: 25% HIR to you; 25% Full IR to you and a sibling; 25% HIR to your sibling; and the final 25% to neither of you - lost forever to your children > > A third child would, on average, get 1/2 of the final 25% above; leaving 12.5% (1/8) which no one got. A forth child would get about 1/2 of this 1/8; leaving 1/16 that no child got. Etc. I just ran the numbers on my three children, and this prediction is right on target. 10.1% of my husband's DNA was not inherited by any of them, and 15.5% of mine.

I agree. The term, "deoxynucleotides," is not incorrect, but it's unnecessarily complex, and definitely not mainstream. But the bigger problem is that to confine the term "nucleotides" to apply only to RNA narrows the accepted definition of nucleotides, thus creating two meanings for the term. Such ambiguity is highly undesirable in technical terminology - not to mention that nucleotides do not occur only in DNA and RNA. Various nucleotides are components of numerous other biologically important molecules. Diana > -----Original Message----- > From: autosomal-dna-bounces@rootsweb.com [mailto:autosomal-dna- > bounces@rootsweb.com] On Behalf Of Tim Janzen > Sent: Sunday, October 20, 2013 4:08 PM > To: 'Larry Vick'; autosomal-dna@rootsweb.com > Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them > > Dear Larry, > I suppose this depends on your definitions. Wikipedia > http://en.wikipedia.org/wiki/Nucleotide says that nucleotides are found in > both DNA and RNA in the opening sentence. Also look at > http://en.wikipedia.org/wiki/DNA where it says the following: "Most DNA > molecules are double-stranded helices, consisting of two long biopolymers > made of simpler units called nucleotides-each nucleotide is composed of a > nucleobase (guanine, adenine, thymine, and cytosine), recorded using the > letters G, A, T, and C, as well as a backbone made of alternating sugars > (deoxyribose) and phosphate groups (related to phosphoric acid), with the > nucleobases (G, A, T, C) attached to the sugars." I don't think that Matt > Cook's definition of DNA as being made up of "deoxynucleotides" is > mainstream. While the nucleotides in DNA are indeed "deoxynucleotides" most > scientists don't include the "deoxy" part when describing the components of > DNA. > Sincerely, > Tim Janzen

Hi Tim and Jim Yes I think it is the best way forward. I have Dad's DNA but unfortunately not Mum's. I probably should ask one of my siblings to test too. Karen On Sun, Oct 20, 2013 at 4:06 PM, Tim Janzen <tjanzen@comcast.net> wrote: > Dear Karen, > I agree with Jim Barlett's comments on triangulation. I have one > other technique I find helpful, particularly for HIRs that are relatively > short (7-10 cMs) for which I have no other people matching one of my > parents > on the same segment. I also compare my two brothers and me against the > person in question in 23andMe, FF, or GEDmatch. If the person matches one > of my parents and also matches one of my brothers or me at the same > location > then the HIR is highly likely to be IBD. If it doesn't match one of my > brothers or me then the HIR is more likely to be IBS. There is only a > 12.5% > probability that any one DNA segment that my parents have will not have > been > inherited by one of my brothers or me. > Tim Janzen > > -----Original Message----- > From: autosomal-dna-bounces@rootsweb.com > [mailto:autosomal-dna-bounces@rootsweb.com] On Behalf Of Karen Hodges > Sent: Saturday, October 19, 2013 4:53 AM > To: autosomal-dna@rootsweb.com > Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them > > Hi Jim > > Thanks for your comments. I think I am good with the true matches now but > the false positives can these only be determined by comparing the raw DNA > when no genealogy match is found and is there a program that can do this? > > Karen > > > On Sat, Oct 19, 2013 at 10:12 PM, Jim Bartlett > <jim4bartletts@verizon.net>wrote: > > > Karen > > > > In general I agree with Tim. I would add that Triangulation has a very > > specific requirement: A=B=C=A. That is each pair (AB,AC,BC) must have a > > shared segment (usually at least 7cM, but perhaps smaller with some risk > of > > a false positive); AND each of these shared segments are significantly > > overlapping - such that all three - ABC - have, say, at least the same > 7cM. > > > > ______________________________ > For answers to Frequently Asked Questions about mailing lists, please see: > http://dgmweb.net/MailingListFAQs.html > > > ------------------------------- > To unsubscribe from the list, please send an email to > AUTOSOMAL-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message >

Dear Karla, Jim Bartlett gave a very nice explanation to your question earlier today. I thought I would give you the statistics as to what percentage of your parents' DNA you can expect to capture if you test a varying number of the children of those parents as follows: 1 50 2 75 3 87.5 4 93.75 5 96.875 6 98.4375 7 99.21875 8 99.609375 9 99.8046875 10 99.90234375 11 99.95117188 12 99.97558594 13 99.98779297 14 99.99389648 15 99.99694824 16 99.99847412 17 99.99923706 18 99.99961853 19 99.99980927 20 99.99990463 I can run estimates for couples who have more than 20 children if necessary! Sincerely, Tim Janzen -----Original Message----- From: autosomal-dna-bounces@rootsweb.com [mailto:autosomal-dna-bounces@rootsweb.com] On Behalf Of Karla Huebner Sent: Sunday, October 20, 2013 7:28 AM To: autosomal-dna@rootsweb.com Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them What would the probability for just two children (since I have only one sibling, and we didn't test my father before he died)? Or can I actually tell the true percentage by looking at 23andMe's chart of our half-and-full identical areas? Karla

Hi Emily, Tim and Jim Thank you all for helping to answer my question regarding WIC matches that don't have segment matches to my IBD/genealogy match. Also I think I understand now IBS and what you were saying Emily. IBS can be coincidental as a result of endogamous populations. IBS can also occur when both parents have the same Alleles eg Both parents have AT, their child inherits AT it is impossible to tell which allele came from which parent. A HIR segment can be mainly made up of paternal DNA but might have some maternal DNA intersorted leading to a false positive. The segment is artificially longer [showing it as a match] as a result of the maternal DNA being read. It is impossible to tell this has happened by looking at the Alleles. It can only be ruled out by a genealogy match [IBD] which show no triangulation to the IBS match in the same location. Karen On Sun, Oct 20, 2013 at 1:59 PM, Tim Janzen <tjanzen@comcast.net> wrote: > Dear Karen, > HIR stands for half-identical region. It is an extremely important > term for genetic genealogists interested in autosomal DNA to understand > well. Because I couldn't find a good definition for an HIR 9 months or so > ago, I wrote my own. It is as follows: > > Half-identical region: a region of two paired chromosomes where at least > one of the two alleles from one person's pair of chromosomes matches at > least one of the two alleles from a different person's pair of chromosomes > throughout the entire region. A half-identical region may be either > identical by descent (IBD) or identical by state (IBS). > > Some scientists use IBS to mean an HIR. I think things are simpler and > clearer if you use the term HIR in the right context and use IBS only for > HIRs that are false matches (not the result of a shared common ancestor for > the HIR in question). This topic came up on the RootsWeb DNA list in 2009 > shortly after 23andMe released Relative Finder. Ann Turner's comments at > > http://archiver.rootsweb.ancestry.com/th/read/GENEALOGY-DNA/2009-11/12572588 > 09 are instructive. > Sincerely, > Tim Janzen > > -----Original Message----- > From: autosomal-dna-bounces@rootsweb.com > [mailto:autosomal-dna-bounces@rootsweb.com] On Behalf Of Karen Hodges > Sent: Saturday, October 19, 2013 2:29 PM > To: autosomal-dna@rootsweb.com > Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them > > What is HIR short for please? > > Karen > > > > > ______________________________ > For answers to Frequently Asked Questions about mailing lists, please see: > http://dgmweb.net/MailingListFAQs.html > > > ------------------------------- > To unsubscribe from the list, please send an email to > AUTOSOMAL-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message >

I don't agree with the terminology he used as both DNA and RNA are made up of nucleotides. Each nucleotide is made up of a nucleobase, a sugar (a pentose), and one or more phosphate groups. In the case of DNA, the nucleobases are adenine, thymine, guanine, and cytosine (A, T, G, and C), and the sugar is deoxyribose. In the case of RNA, the nucleobases are the same, except uracil (U) substitutes for thymine (T) and the sugar is ribose. Hence the acronyms... DNA = deoxyribonucleic acid RNA = ribonucleic acid Diana > -----Original Message----- > From: autosomal-dna-bounces@rootsweb.com [mailto:autosomal-dna- > bounces@rootsweb.com] On Behalf Of Larry Vick > Sent: Sunday, October 20, 2013 2:07 PM > To: autosomal-dna@rootsweb.com > Subject: Re: [AUTOSOMAL-DNA] Family finder matches what to make of them > > Terminology is interesting.  In Tales from the Genome (the course 23andMe is > sponsoring), Matt COOK (one of the instructors) said that nucleotides are > really components of RNA while deoxynucleotides are components of DNA.  I > found that interesting since we use the terminology single nucleotide > polymorphism to describe changes in DNA alleles. > > Hopefully, I didn't add more terminology problems in my description. > > Regards, > > Larry

Chris Treat each shared segment (with any Match) as coming from a Common Ancestor. With multiple shared segments, the Common Ancestors can be the same or different. With a 2nd cousin you may get several shared segments. The odds are high that they are all, or at least mostly, from your shared great grandparents. The closer the Common Ancestor the more likely it is that the CA provided the segments you share. The same CA provided many segments (actually a full set of Chr) to your grandparent, who in turn passed half of that to your parent. Now that same great grandparent CA passed a full set of Chr to the child who is the grandparent of your 2nd cousin. But only 50% of that atDNA would be the same as that passed to your grandparent. Etc. So these segments that the great grandfather CA passed down came from his/her parents - and different segments could/would have come from different ancestors of the great grandparent CA. And there is always the chance, particularly in endogamous populations, that there was another CA for you and your 2nd cousin, not from your well known great grandparent. Jim - Sent from my iPhone - FaceTime! On Oct 20, 2013, at 11:21 AM, Christina Hunt <chrisnina@gmail.com> wrote: > I am not very good at talking about segments etc., but I want to see if I > understand this. My second cousin on my maternal side tested. I have noticed > that we have some matches in common. When I look more closely though, she > doesn't match the other person on the same chromosome as I do. > > For example: one of the matches is a person with a grandfather who was said to > be the son of someone I share a surname with. We communicated and her people > and mine were from the same basic location. Even possibly the same neighborhood > - so it corroborated what she had heard about her real ancestry. Not the exact > father but the same surname. Then my 2nd cousin tested. I guess I expected a > match would confirm the surname on in the same place on the chromosome. > However, her match is greater on a different chromosome. Would that suggest we > are matching different parts of the same tree. One of us the male line and one > picking up the female line? > Does that make sense? > The images from Chromosome Browser: > https://www.dropbox.com/sh/wnklaa0b6w7emtf/4-zQBbD4Qr > > I want to see if I am correctly interpreting the differences in matches. > Chris