<Ul> <Li> VAJ </Li> </Ul> <P> Various failures in the SRY genes </P> <Ul> <Li> White eyes in Drosophila melanogaster flies--the first sex - linked gene discovered . </Li> <Li> Fur color in domestic cats: the gene that causes orange pigment is on the X chromosome; thus a Calico or tortoiseshell cat, with both black (or gray) and orange pigment, is nearly always female . </Li> <Li> The first sex - linked gene ever discovered was the "lacticolor" X-linked recessive gene in the moth Abraxas grossulariata by Leonard Doncaster . </Li> </Ul> <Li> White eyes in Drosophila melanogaster flies--the first sex - linked gene discovered . </Li>

X linkage was discovered for the first time in
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