In males, what is the first noticeable change during puberty?
A) muscles become larger
B) testicles increase in size
C) voice deepens
D) sperm production begins
Correct Answer:
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Q6: The HPG axis includes the _, the
Q7: What are the primary factors responsible for
Q8: There are two types of sex hormones:
Q9: There is evidence that the protein _
Q10: The HPG axis refers to the feedback
Q12: Because adrenarche occurs about two years earlier
Q13: Sexual maturation for human males typically proceeds
Q14: In females, what is the first noticeable
Q15: _ involves the HPG axis and leads
Q16: _ occurs before gonadarche and results in
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