Before zygotic genes become active, the stages of animal development are directed by the ____.
A) environment
B) cytoplasmic determinants of the egg
C) cytoplasmic determinants of the sperm
D) cytoplasmic determinants of the egg and the sperm
E) zygote nucleus
Correct Answer:
Verified
Q5: Uterine contractions _.
A) often occur during the
Q6: Morphology refers to the _ of an
Q7: During mitotic cleavage. _.
A) no cell division
Q8: How does the amount of yolk relate
Q9: The final body form of an animal
Q11: The information directing the development of the
Q12: As embryonic cells divide during cleavage, the
Q13: Compared to other mammals, the human brain
Q14: The correct sequence of embryonic development is
Q15: Most of the mRNA and protein molecules
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