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When was the first correlation between a chromosomal deletion and human disorder first developed?(a) 1963(b) 1973(c) 1983(d) 1993I had been asked this question in a job interview.I want to ask this question from Gene Expression Control in portion Control of Gene Expression of Cell Biology

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Right choice is (a) 1963

The EXPLANATION is: The first CORRELATION between a CHROMOSOMAL DELETION and a human disorder was first discovered in 1963 by Jerome Lejeune, a French geneticist who had earlier discovered the chromosomal BASIS of Down syndrome.



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