Question

It is impossible for sperm to be functional (able to fertilize the egg) until after ________. the tail disappears they have been stored in the uterus for several days they become spermatids they undergo capacitation

Answer 1

Answer:

The tail disappears

Explanation:

When a sperm travels up the Fallopian tubes and meets an egg, it loses its tail just immediately after breaching the walls of the egg and then the head penetrates inside to the nucleus. This is because the head is what contains the genetic material while the tail only helps the sperm swim to the egg- hence its purpose is served when the sperm reaches the egg.