What is the normal number of pairs of chromosomes for humans?
A) 21
B) 22
C) 23
D) 24
E) 42
Correct Answer:
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Q9: During which trimester(s)does the most rapid fetal
Q10: What is the sex chromosome make-up of
Q11: Which of the following properties does a
Q12: In humans,fertilization usually occurs
A) in the ovary.
B)
Q13: The chorion
A) contains human embryonic stem cells
Q15: When can the mother usually feel movements
Q16: The villi
A) extend into the spaces in
Q17: Whether a fetus develops as a male
Q18: Sperm sorting relies on _ between sperm
Q19: At what point in development is the
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