Cleavage
A) is completed in the first two hours following fertilization
B) increases the number of cells of the embryo
C) increases the size of the embryo
D) all of these choices

Question

Quizplus · Accepted Answer

Cleavage is a rapid series of cell divisions that increase the number of cells in the embryo, but not the size. It usually occurs within the first few hours following fertilization. Therefore, option A is incorrect and option C is partially incorrect. Option D is incorrect as only option B is correct.