About what percentage of births are twins?
A) 25%
B) 15%
C) 10%
D) 5%
E) 1%
Correct Answer:
Verified
Q29: What does the hormone oxytocin contribute to
Q30: What triggers the process of labor and
Q31: Humans are born much less well developed
Q32: What are the stages of labor and
Q33: When "water breaks" in the early stages
Q35: How do identical twins occur?
A) One sperm
Q36: What is the difference between fraternal twins
Q37: Under what circumstances might identical twins be
Q38: According to your text, about what percentage
Q39: What typically causes a miscarriage?
A) Genetic or
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