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Five Myths about Ancestry DNA

Replies: 41

Re: Five Myths about Ancestry DNA

Posted: 1358478017000
Classification: Query
Concerning "1. My ethnicity should match my family tree", it's my sense that the reason one's genetic ethnicity might not match one's family tree is because of the random aspect of genetic contributions of a parent to their child. Fifty percent of the child's genetics come from the mother and 50% from the father, however, there's no guarantee that grandmothers are contributing 25% and grandfather's 25%. It's possible that the grandmother gets the full 50% contribution. It's a random thing. So, if grandma gets the lucky draw and contributes the full 50%, then grandpa gets nothing and his ethnicity is lost in the grandchild. Am I right or am I right? You can tell me I'm wrong. I'll learn from it.
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ajmr1a1 1357575692000 
MJ782 1357588370000 
jbarry6899 1357589052000 
Nachalink123 1357589626000 
LeeHigdonNewe... 1357658967000 
pelusonorway 1357686994000 
SerenoaBarb 1357569800000 
pelusonorway 1357573461000 
Kelly McAllis... 1358478017000 
jbarry6899 1358479012000 
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