3 years ago

If a female who is a carrier for a sex-linked trait mateswith

Biology

1 answer:

SOVA2 [1]3 years ago

4 0

Answer:

B) 1/2

Explanation:

A sex linked trait is passed via sex chromosomes. Here the given trait is X linked recessive because female carrier is not possible for X linked dominant trait.

For X linked recessive trait:

Carrier female = XCXc

Affected male = XcY

Their progeny:

XC Xc

Xc XCXc XcXc

Y XCY XcY

Out of the sons, half will be not affected ( XCY ) and half will be affected ( XcY )

Hence, half of the sons will express the trait.

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