From which studies did the discovery of sex-linked genes and the production of the first chromosome map arise?

Question

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The discovery of sex-linked genes and the production of the first chromosome map arose from the studies of fruit flies by Thomas Hunt Morgan and his colleagues in the early 1900s. They used Drosophila melanogaster to investigate patterns of inheritance and discovered the X-linked inheritance of some traits. They also produced the first chromosome map, which showed the relative positions of genes on the X chromosome.

From Which Studies Did the Discovery of Sex-Linked Genes and the Production