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15 March, 06:29

Offspring of parents percent

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  1. 15 March, 10:10
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    We received exactly 50% of your genes from each of our parents, yet, the percentages of DNA we received from our ancestors at the grandparent level and further back are not essentially divided in two with each generation. Less than 1% of our DNA is most likely to come from any given ancestor at seven generations back.

    Nonetheless, one doesn't automatically inherit the same amount of DNA from his or her grandparents of the same level for the reason that inheritance is random; 12% of DNA may have been passed to you by one great grandparent, whereas only 4% may have been passed on by another great-grandparent. Similarly, ethnicity percentages are not passed on in equal amounts. If your fourth great-grandparent is 100% Australian and none of your other ancestors are Australian at all, you may be anywhere from 0 - 3% Australian, depending on which genes you inherited from your part - Australian parent. Since only half of a parent's genes are passed on to each child, your siblings may have received some genes but you didn't, and vice versa. This kind of pattern would continue with each sibling born. Siblings share only about half of their DNA with each another, some siblings inherit more of some ethnicities than the other siblings, and some siblings may not inherit some ethnicities at all because of the random nature of inheritance.
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