Who has paid for an ancestry dna test?

[Baitball Blogger]

I understand that you get 50 percent genetics from each parent, but percentages don't always line up with these ancestry tests. For example, let's say that one parent is 50% of Nation A, and the second parent doesn't share any genes from that Nation. You would expect that child to end up with 25% of Nation A. But the Ancestry tests shows 42% of Nation A. In fact, the aggregated DNA results are less then 25% from the second parent, who is the mother.

Does this come down to recessive and dominant genes?

[The Velveteen Ocelot]

1. It's not about dominant and recessive genes, but about how they are inherited.

You inherit random amounts of DNA from each parent, so your ancestry results will not necessarily (or likely) be the same as a sibling's. Here's a good explanation: https://genetics.thetech.org/ask-a-geneticist/same-parents-different-ancestry

[Baitball Blogger]

2. That is a good explanation, I suppose.

But, it does explain why some people feel that a child, "takes after the other parent." Nature versus Nurture.

[Historic NY]

3. Regions changed over time, migrations....

they will update the percentages as greater numbers of like samples show up... Ancestry has the largest sampling covering 380 possible regions .

They just redefined mine narrowing it. The Irish side remains fairly consistent, my Italian side changes as people migrated more frequently across the Mediterranean and in to coastal Africa and Portugal regions. They narrowed down connection to Sardinia, France and Portugal, these are the newest.

[Baitball Blogger]

5. This is just bizarre to me.

They are matching results with similar results from other people. And, as more people sign on to taking the tests in new regions, the tests change. Sounds like there might be a lot of chance for error.

[Dave Starsky]

7. On the contrary. The extra data coming in focuses it in.

You actually start out with more error.

[Historic NY]

8. Exactly....its right to the region and specific area in Ireland....

[PoindexterOglethorpe]

4. It's also possible that the both parents have DNA from

Nation A. Lots of DNA tests show that family stories of where they came from aren't necessarily correct.

[MFM008]

6. My son did it

his was pretty close 40 some percent UK/Ireland
29% french, rest mixed.
Im doing 23 and me soon.