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 producing enough energy to power swimming.
C) preventing the sperm from swimming to the egg cell.
D) interfering with the attachment of the flagella to the sperm.
