3 years ago

F a boy exhibits a sex-linked trait that is carried on the X chromosome, what must be true?

1 answer:

4 0

If a boy exhibits a sex-linked trait that is carried on the X chromosomes, his mother carried at-least one allele for that trait.
The boy has a X chromosome inherited from his mother and he inherited Y chromosome from his father. So, his mother must carried at least one allele for that trait because he exhibits a sex linked trait that is carried on X chromosome.

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