I found this simple and clear explanations of a physics teacher about haplogroups and their inheritance (with his example).
https://www.npl.washington.edu/av/altvw144.html
Nice to read for any interested, and easy to understand for the uninformed.
https://www.npl.washington.edu/av/altvw144.html
Nice to read for any interested, and easy to understand for the uninformed.