A woman affected with an X-linked recessive disorder:
A. Has one X chromosome affected by the mutation
B. Will transmit the disorder to all of her children
C. Will transmit the disorder to all of her sons
D. Will not transmit the mutation to any of her daughters
ANS: C
An X-linked recessive disorder means that in a woman, both X chromosomes must have the mutation if she is to be affected. Because males have only one copy of the X chromosome, they will be affected if their X chromosome carries the mutation.
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1. True 2. False
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