[chesley]

I don’t know.

My father had 4 sons and a daughter.

I have a son, he has 2 daughters. HIs wife can’t have any more children. Y-line at an end.

My sister has 2 sons and a daughter; but Y-line at an end.

One brother has a daughter. Y at an end.

One brother has 3 daughters, Y at an end.

one brother has a son. He just got out of high school last year. And he’s the last hope for another Y generation here.

What are the odds?

[Verginius Rufus]

There are 18 great-grandchildren alive of my paternal grandparents—12 boys and 6 girls. But only 3 of the boys carry my paternal grandfather’s Y-chromosome.

[Verginius Rufus]

There are 18 great-grandchildren alive of my paternal grandparents—12 boys and 6 girls. But only 3 of the boys carry my paternal grandfather’s Y-chromosome.