Do sperm really race to the egg?

Do sperm really race to the egg?

It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case?

The long and the short of it: new insights on sperm length help demystify the complexities of sexual selection

Human sperm are approximately 6000th of a centimeter long, a small fraction of a man's total body length. By contrast, fruit fly (Drosophila spp.) sperm can reach nearly 6 cm, roughly twenty times the total length of their bodies. This dramatic ...