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Question

A cross of a wild type red-eyed female Drosophila with a violet-eyed male produces all red-eyed offspring. If the gene is sex linked, what should the reciprocal cross(violet-eyed female x red-eyed male) produce? (Assume that the red allele is dominant to the violet allele).

A
All violet-eyed flies
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B
3 red-eyed flies to 1 violet-eyed
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C
A 1:1 ratio of red and violet eyes in both males and females
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D
Red-eyed females and violet-eyed males
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Solution

The correct option is C A 1:1 ratio of red and violet eyes in both males and females

A cross of a wild type red-eyed female Drosophila with a violet-eyed male produces all red-eyed offspring. Assuming that the red allele is dominant to the violet allele, if the gene is sex-linked, the reciprocal cross (violet-eyed female x red-eyed male) will produce A 1:1 ratio of red and violet eyes in both males and females.
So, the correct answer is 'A 1:1 ratio of red and violet eyes in both males and females'.

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