A woman is having trouble becoming pregnant. Examination of her partner's sperm indicates that dynein feet are missing from the flagella in his sperm cells. A physician explains that this could interfere with fertility by
A) preventing the sperm from attaching to the egg cell.
B) preventing the sperm from swimming to the egg cell.
C) preventing the sperm from producing enough energy to power swimming.
D) interfering with the attachment of the flagella to the sperm.

Question

Quizplus · Accepted Answer

Dynein feet are responsible for the movement of flagella, which helps sperm swim towards the egg. Therefore, the missing dynein feet in the sperm cells would interfere with the sperm's ability to swim to the egg, making fertilization less likely.

A Woman Is Having Trouble Becoming Pregnant