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(B) Thomas Hunt Morgan: He provided the experimental verification of the chromosomal theory of inheritance using $Drosophila melanogaster$. He also di

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Morgan: Experimental verification of chromosomal theory of inheritance; Sturtevant: Genetic mapping

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(B) Thomas Hunt Morgan: He provided the experimental verification of the chromosomal theory of inheritance using $Drosophila melanogaster$. He also discovered the phenomenon of linkage and recombination.Alfred Sturtevant: He was a student of Morgan who used the frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes to map their position on the chromosome, known as genetic mapping.

State the contribution of the following scientists: Thomas Hunt Morgan and Alfred Sturtevant.

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