Unlike defects transmitted by dominant genes, those transmitted by recessive genes tend to be lethal at an earlier age because:
A. any affected children would be less likely to survive infancy.
B. recessive genes are less likely to be transmitted by homozygous carriers who have the disorder.
C. recessive genes are likely to be transmitted by heterozygous carriers who do not themselves have the defect.
D. any affected children would likely die before reproducing.
Answer: C
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