Inheritance of Sex-linked traits in Drosophila

TH Morgan was at first dismissive of Mendelian genetics, because it lacked any physical basis. His mind was changed instantly by the discovery that rare white-eye trait in the fruit-fly Drosophila melanogaster behaved in crosses exactly as predicted if it were the recessive allele of a gene located on the X chromosome. Morgan received the 1936 Nobel Prize for his development of Drosophila as a genetic investigatory tool.