DNA Tree

It is a tree. Just based on XY sex chromosomes.

Think about X and Y only. They determinate the sex of the human. The rest of chromosomes, 22 paires autosome, are not in the picture.

How close between them?

David is a blogger, geek, and web developer — founder of FreeInOutBoard.com. If you like his post, you can say thank you here View all posts by David Yin