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NEET BIOLOGYEasy

Select the correct statement from the ones given below with respect to dihybrid cross:

A

Tightly linked genes on the same chromosome show higher recombinations

B

Genes far apart, on the same chromosome, show very few recombinations

C

Genes loosely linked, on the same chromosome, show similar recombinations as the tightly linked ones

D

Tightly linked genes on the same chromosome show very few recombinations

Step-by-Step Solution

, Morgan's experiments on Drosophila revealed that when genes are grouped on the same chromosome, their physical association (linkage) varies. Genes that are tightly linked show very low recombination (e.g., 1.3% for yellow and white genes), whereas genes that are loosely linked show higher recombination (e.g., 37.2% for white and miniature wing genes) .

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