I think this article explains it well. Pedigree collapse. With enough time and enough descendants everyone ends up intermarrying down the line. So every couple of thousand years or so everyone is essentially related to everyone unless your population has been isolated. http://genealogysstar.blogspot.com/2011/10/pedigree-collapse-and-end-of-line.html Sent from my iPad > On Apr 28, 2016, at 5:17 PM, Christine Usher via <[email protected]> wrote: > > I haven't yet identified any living relatives descended through a male line that are related to me, been working on it 40 years > > Chris U > >> On 28 Apr 2016, at 09:24, Liz Phillips via <[email protected]> wrote: >> >> I thought my direct line was fairly healthy until I thought about it, half >> brother (different father), who has two daughters and one son, so only has >> three daughter's, girls obviously different surnames, but one had four >> daughters anyway and the other only one son. Male cousin who has no >> children, uncle with only one girl! So, this family line is now dead! >> >> best wishes, from another girl of the only girl! >> Liz >> >> On Wed, Apr 27, 2016 at 12:17 PM, Derek Bandy via <[email protected]> >> wrote: >> >>> Don't forget over extended periods of time many DNA lines simply die out, >>> people with no children, no male children (y-dna). It doesn't have to be >>> natural disasters or massacres. There was a study on it some time ago but >>> I >>> have lost the details. >>> >>> with kind regards >>> Derek Bandy >>> >>> -----Original Message----- >>> From: [email protected] [mailto:[email protected]] On >>> Behalf Of JANETHESKI via >>> Sent: 27 April 2016 12:00 >>> To: [email protected] >>> Cc: [email protected] >>> Subject: Re: [G] DNA conclusions? >>> >>> And the Black Death... >>> >>> And the plague of 1665... >>> >>> Janet [2281] >>> >>> >>> >>> In a message dated 27/04/2016 11:58:02 GMT Daylight Time, >>> [email protected] writes: >>> Well, the last ice age would have killed many but even so ... >>> >>> -----Original Message----- >>> From: [email protected] [mailto:[email protected]] On >>> Behalf Of Christopher Gray via >>> Sent: 2016 April 27 08:19 >>> To: [email protected] >>> Subject: [G] DNA conclusions? >>> >>> A recent claim in the UK's Daily Telegraph - as pointed to by today's >>> "Eastman's Online Genealogy Newsletter" - was that half of today's >>> European >>> men are descended from a single man who lived some 4,000 years ago. >>> Leaving >>> aside what happened to all the boys descended from the many thousands of >>> other men alive at that time - let alone this man's close relations (mass >>> genocide?) - how can people make such sweeping generalisations based on >>> the >>> DNA of just 1,200 people? I could better understand if the study was of a >>> few million people. >>> >>> The same goes for this "Eve" person we are all meant to be descended from. >>> Was she the only female alive at the time? Did she wonder around Africa >>> killing off all the others? >>> >>> Chris >>> >>> >>> _____________________________________________ >>> >>> RootsWeb lists - surnames, regions, software, etc: >>> http://lists.rootsweb.ancestry.com/ >>> ------------------------------- >>> To unsubscribe from the list, please send an email to >>> [email protected] with the word 'unsubscribe' without the quotes >>> in the subject and the body of the message >>> >>> >>> --- >>> This email has been checked for viruses by Avast antivirus software. >>> https://www.avast.com/antivirus >>> >>> _____________________________________________ >>> >>> RootsWeb lists - surnames, regions, software, etc: >>> http://lists.rootsweb.ancestry.com/ >>> ------------------------------- >>> To unsubscribe from the list, please send an email to >>> [email protected] with the word 'unsubscribe' without the quotes >>> in the subject and >>> the body of the message >>> >>> _____________________________________________ >>> >>> RootsWeb lists - surnames, regions, software, etc: >>> http://lists.rootsweb.ancestry.com/ >>> ------------------------------- >>> To unsubscribe from the list, please send an email to >>> [email protected] with the word 'unsubscribe' without the quotes >>> in >>> the subject and the body of the message >>> >>> _____________________________________________ >>> >>> RootsWeb lists - surnames, regions, software, etc: >>> http://lists.rootsweb.ancestry.com/ >>> ------------------------------- >>> To unsubscribe from the list, please send an email to >>> [email protected] with the word 'unsubscribe' without the quotes >>> in the subject and the body of the message >> _____________________________________________ >> >> RootsWeb lists - surnames, regions, software, etc: >> http://lists.rootsweb.ancestry.com/ >> ------------------------------- >> To unsubscribe from the list, please send an email to [email protected] with the word 'unsubscribe' without the quotes in the subject and the body of the message > > _____________________________________________ > > RootsWeb lists - surnames, regions, software, etc: > http://lists.rootsweb.ancestry.com/ > ------------------------------- > To unsubscribe from the list, please send an email to [email protected]eb.com with the word 'unsubscribe' without the quotes in the subject and the body of the message