Answer :

Morgan confirmed the Mendelian laws of inheritance and the fact that genes are located on same chromosomes. Morgan had discovered that eye colour in Dorsophilia expressed a sex linked trait. All first generation offspring of a mutant white-eyed male and a normal red-eyed female would have red eyes because every chromosome pair would contain at least on copy of the X chromosome with dominant trait. The X chromosome is transferred to both male and female offspring because Dorsophilia exhibits XY type of sex determination.


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