Map distance of genes is calculated by ___.

Number of mutant genes

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Crossover percentage

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Recombination frequency of each gene locus

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Non crossover percentage

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Solution

The correct option is C
Recombination frequency of each gene locus

Alfred Sturtevant, who was T.H. Morgan’s student, calculated the crossover percentage of two genes. This crossover percentage is called as frequency of recombination between gene pairs on the same chromosome. It is used as a measure of the distance between genes.

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