Discussion
In Drosophila, the phenomenon of translocation was first discovered by:
Answer: D
Translocation was first discovered in Drosophila by Bridges (1923). Calvin Bridges studied chromosome rearrangements in the fruit fly.
Morgan worked on linkage and sex-linked inheritance, Mendel on the laws of inheritance in peas, and Darwin on evolution, so they are not credited with translocation.
Bridges worked with Morgan's group on Drosophila and described chromosome rearrangements including translocation in the early 1920s. He is also known for the discovery of non-disjunction.
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