Differentiation among blastomeres is the result of
A)enzymes introduced by the sperm.
B)hormones produced by the ovum.
C)an unequal distribution of regulatory molecules in the cytoplasm of the ovum.
D)regulator molecules supplied by cells of the uterus.
E)enzymes activated by the sperm.

Question

Quizplus · Accepted Answer

During fertilization, molecules that regulate gene expression and function are unequally distributed among the blastomeres. This results in different gene expression and ultimately, differentiation. This is known as cytoplasmic determinants.

Differentiation Among Blastomeres Is the Result of