Y-chromosomal Adam: My Original Human Ancestor

Y‑chromosomal Adam: My Original Human Ancestor

My sto­ry be­gins with my first known an­ces­tor, for the hu­man part of my DNA, was Y Chro­mo­so­mal Adam. He’s the first “anatom­i­cal­ly mod­ern hu­man,” as the evo­lu­tion­ary-bi­ol­o­gists call them: the one man whom sci­ence has taught us that I’m de­scend­ed from. And all oth­er mod­ern hu­mans, too.