The point of fertilization occurs when
A) sperm are deposited in the vagina.
B) sperm reach the outer jelly coating of the egg.
C) she sperm sheds the tail.
D) the sperm nucleus and egg nucleus unite to form a zygote.
Correct Answer:
Verified
Q2: The concept that an egg or sperm
Q3: Rotational cleavage is unique to
A)amphibians.
B)mammals.
C)sea stars.
D)lophotrochozoa.
Q6: A characteristic of development of Deuterostomia is
A)spiral
Q11: The concept that an egg contains the
Q12: Eggs with very little yolk that is
Q13: Cleavage on the surface of the yolk
Q14: _ occurs when a fertilized egg enters
Q16: What prevents a foreign species' sperm from
Q18: Before fertilization,as an egg cell matures,its nucleus
Q20: In animals,indirect development
A)occurs only in mammals.
B)lacks a
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