Barton - Statistics: see this article for the percentages: *http://www.isogg.org/wiki/Autosomal_DNA_statistics* and this one for the expected number of cMs and segments http://www.isogg.org/wiki/IBD#Ranges_of_total_centimorgans_of_IBD_segments_expected.2C_based_on_family_relationship : but the further out you get, the less reliable any estimate is By the way I totally second the second cousins being the most useful. They share one set of g-grandparents so you get to narrow down your matches to that line when another matches both of you. This has been very useful for me. In fact I blogged about it today http://blog.kittycooper.com/2013/10/results-for-a-second-cousin-on-the-skjold-line/ but I have just started working on this data so not much yet Kitty On Sat, Oct 5, 2013 at 9:54 PM, <autosomal-dna-request@rootsweb.com> wrote: > Message: 6 > Date: Sat, 05 Oct 2013 21:53:28 -0700 > From: Barton Lewis <bartonlewis@optonline.net> > Subject: > > [AUTOSOMAL-DNA] once removed etc. > To: autosomal-dna@rootsweb.com > Message-ID: <EA6706EC2FD540CDAF040AAF62424E06@barton> > Content-Type: text/plain; charset=us-ascii > > Dear list, > > I seem to recall seeing that for purposes of amount of DNA shared, a cousin > once removed is roughly equivalent to the next higher number (e.g. 2nd > cousin once removed is = to third cousin). Is this correct? > > What about cousins twice or thrice removed? How are those amounts > quantified? > > Thank you. > > Barton > --------------------------------------------------------------- Kitty Munson Cooper, web developer,programmer, San Diego,CA http://www.openskywebdesign.com/ linked in http://www.linkedin.com/in/kittycooper

Terrific, thanks for the links, Kitty. Barton On Sun, Oct 06, 2013 at 03:16 AM, Kitty Cooper wrote: > Barton - > > Statistics: see this article for the percentages: > > *http://www.isogg.org/wiki/Autosomal_DNA_statistics* > > and this one for the expected number of cMs and segments > > http://www.isogg.org/wiki/IBD#Ranges_of_total_centimorgans_of_IBD_segments_expected.2C_based_on_family_relationship > : > > > but the further out you get, the less reliable any estimate is > > By the way I totally second the second cousins being the most useful. > They > share one set of g-grandparents so you get to narrow down your matches > to > that line when another matches both of you. This has been very useful > for > me. > > In fact I blogged about it today > > http://blog.kittycooper.com/2013/10/results-for-a-second-cousin-on-the-skjold-line/ > > but I have just started working on this data so not much yet > Kitty > >