NEET Biology question

Biology Principles of Inheritance and Variation NEET

The linkage map of X-chromosomes of fruit fly has 66 units, with yellow body gene (y) at one end and bobbed hair (b) gene at the other end. The recombination frequency between these two genes (y and b) should be

(A)Correct
(B)
(C)
(D)

Answer: (A)

Solution

Genetic map distance (in map units, based on cumulative crossover frequency) is additive and can exceed 50 units for genes far apart on a long chromosome, but the directly observed recombination frequency between any two loci can never exceed 50%, because a single crossover event between two loci always yields

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Question ID VK-119428