NEET Biology question

Calvin bridges demonstrated sex determining factor is the ratio of number of

(A)X-chromosome to autosomeCorrect
(B)Autosome to X-chromosome
(C)Y-chromosome to X-chromosome
(D)Y-chromosome to autosome

Answer: (A)

Solution

Calvin Bridges's genic balance theory (1926), based on his work with *Drosophila melanogaster*, demonstrated that sex is determined not simply by the presence of X or Y chromosomes but by the ratio of the number of X chromosomes to

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Question ID VK-120006