Typically, one sperm fertilizes an oocyte because ____
a. an acid solution is released that kills all other sperm
b. special organelles within the oocyte eject more than one sperm
c. changes occur to the oocyte's protein coat that prevent further penetration
d. follicle cellular space is only wide enough for one sperm
e. usually only one sperm arrives at the oocyte
ANSWER: c
You might also like to view...
Examine Figure 24.1 in your text. Which of the following groups is monophyletic?
A. Old World monkeys and New World monkeys B. Old World monkeys and apes C. New World monkeys and Prosimians D. Prosimians and apes E. Prosimians, New World monkeys, and Old World monkeys
The gizzard carries out the same function in birds, alligators, and earthworms as ____ do in insects
Fill in the blank with the appropriate word.
Adaptive immunity is also referred to as ____ immunity
a. acquired b. innate c. secondary
d. latent e. hidden
Fragments of DNA can be separated by electrophoresis according to _____
a. sequence b. length c. species d. composition