Date: September 12, 2018 09:49PM
I found this article very helpful.
DNA is Like a Bunch of Colored Beads
DNA isn’t passed down from generation to generation in a single block. Not every child gets the same 50% of mom’s DNA and 50% of dad’s DNA. (Unless of course they are identical twins).
This has consequences in terms of how much DNA siblings share. And even more significantly, what DNA they share.
One way to think about this is to imagine DNA as a bunch of colored beads. Since we are interested in ancestry here, we will say that different colors mean different ancestries.
Imagine that a man from Japan marries a woman from Europe. Her DNA happens to be 100% European and his 100% Asian.
Let’s say that the European beads are red and the Asian beads are blue. Here is what this might look like:https://genetics.thetech.org/ask-a-geneticist/same-parents-different-ancestry
Edited 1 time(s). Last edit at 09/12/2018 09:50PM by SusieQ#1.