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Genetic diagram for sex linked genes
They discovered later that the white-eyed mutants are more likely to die before they hatch than the red-eyed flies
This gene has its locus on the X-chromosome.
It is said to be sex-linked.
In sex linkage the reciprocal crosses do not give the same results:
In mammals the Y-chromosome is small so it does not carry many genes. (They are characteristically inherited down through the males only.) In general, we can say that sex-linked genes are linked to the X-chromosome.
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