Multiple Choice
All cells in an embryo have the same genes, yet they express different subsets of genes. Selective gene expression is therefore the basis of ____.
A) cleavage
B) cell differentiation
C) fertilization
D) gamete formation
E) organ maturation
Correct Answer:

Verified
Correct Answer:
Verified
Q30: Which sexually transmitted disease(s) (STD) can be
Q31: What is the most effective contraceptive approach
Q32: The primitive streak is associated with which
Q33: Which substance regulates development by affecting cells
Q34: Menstrual flow begins in response to _.<br>A)rising
Q36: The heart, muscles, bones, and blood develop
Q37: Which is the last structure that a
Q38: What gland provides secretions that help raise
Q39: What is the thick fluid, rich in
Q40: During fertilization, _ egg and sperm combine