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 >

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

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 >

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