A color-blind woman marries a man who is not color-blind. All of their sons are color-blind, but none of their daughters are color-blind. Color-blindness is likely...?

Answer choices:
1.the result of having too few chromosomes.
2.the result of having an extra chromosome.
3.a sex-linked trait.
4.a recessive trait.

MY ANSWER:3.a sex-linked trait.

5 answers

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