Fraternal twins account for 1 in every _____ births in the United States.
A) 60
B) 100
C) 330
D) 500
Correct Answer:
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Q14: Deoxyribonucleic acid, or DNA,
A) is a rodlike
Q15: _ are sex cells that contain _
Q16: _ matching pair(s) of chromosomes is/are called
Q17: _ are the biological foundation on which
Q18: During mitosis,
A) a single cell develops into
Q20: Gametes are
A) the result of the uniting
Q21: Victoria carries the abnormal allele for hemophilia.
Q22: Harley was born with Klinefelter syndrome. Which
Q23: Individuals who know that genetic problems exist
Q24: Characteristics that vary on a continuum among
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