A zygote forms
A) as soon as a sperm cell penetrates an egg cell.
B) when the embryo implants in the uterine wall
C) when a fertilized egg divides to produce two cells.
D) after at least two divisions of a fertilized egg.
E) after many divisions of a fertilized egg.
Correct Answer:
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Q2: Successive cell divisions convert the zygote into
Q4: The blastula forms before this stage.
A)A
B)B
C)C
D)D
E)E
Q5: This stage occurs in the parents.
A)A
B)B
C)C
D)D
E)E
Q7: Over the last two decades the incidence
Q8: Cleavage produces the
A) zygote.
B) blastula.
C) gastrula.
D) puff.
E)
Q8: In the process of blastula formation,
A)the size
Q9: In December of 1998, Nkem Chukwu of
Q10: Which stage in reproduction and development occurs
Q11: The primary tissue layers are formed in
Q12: Which embryonic tissue is incorrectly associated with
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