Multiple Choice
During which of the following stages do cell lineages of identical genetic makeup become structurally and functionally different from one another according to the genetically controlled developmental program of the species?
A) cleavage
B) differentiation
C) blastula formation
D) metamorphosis
E) ovulation
Correct Answer:

Verified
Correct Answer:
Verified
Q28: The effectiveness of all of the following
Q29: Parthenogenesis refers to<br>A) new genetically based traits
Q30: Mesoderm gives rise to all of the
Q30: The reproductive organ in the human female
Q31: In a sperm's journey out of the
Q32: Typically,one one sperm fertilizes the oocyte because<br>A)
Q34: Classification.Answer the questions in reference to the
Q36: The average number of sperm that enter
Q38: A penis becomes erect because of<br>A) muscle
Q61: A fully functional corpus luteum secretes _.<br>A)