Mark Doren Quotes (2 Quotes)

Though we all know that the survival of the species depends on producing children, up until now we haven't understood how germ cells in the developing embryos decide whether to eventually become the sperm or eggs needed later for adult reproduction. Now we know one way these other cells are talking to germ cells about sex.

Evolutionarily, germ cells are one of the most ancient cell types, needed by every type of animal to reproduce. Their developmental program is very similar, whether we are talking fruit flies or humans. As a result, these findings could eventually help us