Once a sperm enters a secondary oocyte,
A) meiosis II of the oocyte begins.
B) mitotic division of the oocyte begins.
C) meiosis I of the oocyte begins.
D) other sperm quickly follow into the oocyte.
Correct Answer:
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Q2: Implantation is completed by the _ day
Q3: The _ becomes part of the umbilical
Q4: The stage at which a pre-embryo is
Q5: During the process of implantation, the enzymes
Q6: During embryonic development, the following major events
Q8: The embryonic membranes include the following structures
Q9: Fertilization usually occurs in
A)uterine tube.
B)ovary.
C)vagina.
D)uterus.
Q10: The _ develop(s) into the germ layers
Q11: The placenta serves as an interface between
Q12: The embryonic stage of development is completed
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