The DU Lounge
In reply to the discussion: Got some very interesting family DNA results: Updated [View all]Apollo Zeus
(251 posts)so there may be less influence from the father's side.
>>if you were told your father was German but there was no German in your DNA, he could still be your father?
Absolutely yes. Two reasons: 1) tying DNA to modern european geographical boundaries is dubious, and 2) if he passed only DNA that does not get id'd by 23andMe as "Germanic" then they would say 'no German.'
If we think of genetic recombination as being like 23 coin flips with only one gene winning each one then we see why sibilings tend to average around 50% genetic overlap.
>>the chromosomes in cells line up in pairs and exchange bits of genetic material before forming an egg or sperm cell. Each mature egg and sperm then has its own specific combination of geneswhich means offspring will inherit a slightly different set of DNA from each parent.<<
From (good overview and answers why sibliings get different results): https://news.nationalgeographic.com/2018/03/dna-ancestry-test-siblings-different-results-genetics-science/