Multiple Choice
Generally,only one sperm fertilizes an egg because
A) there are so few sperm that two are unlikely to arrive at the same time.
B) sperm compete and only the most fit one is accepted.
C) many sperm enter but only one set of chromosomes fuses with the egg nucleus;excess sperm are absorbed.
D) when the first sperm membrane fuses with the egg membrane,a barrier to other sperm forms.
Correct Answer:
Verified
Correct Answer:
Verified
Q1: In nearly all metazoa,"germ layers" is a
Q2: The abnormal entrance of more than one
Q3: If yolk is primarily food storage for
Q4: In an amniotic egg,the amnion<br>A)serves as a
Q6: "Diploblastic" refers to _ where _.<br>A)fish and
Q7: The difference between primary and secondary induction
Q8: Neighboring cells influence the development of each
Q9: The point of fertilization occurs when<br>A)sperm are
Q10: The major group of the animal kingdom
Q11: Discuss or outline the derivatives of endoderm,mesoderm,and