During the studies on genes in Drosopila that were sex-linked T.H. Morgan found F2-populabon phenotypic ratios deviated from expected 9 : 3 : 3 : 1. Explain the conclusion he arrived at.

Explanation

Morgan attributed this due to the physical association or linkage of the two genes and coined the term to describe this physical association of genes on a chromosome and the term recombination to describe the generation of non- also found to est gere combinations. Morgan and his co-workers that even when genes were grouped on the same chromosomes, some genes were very tightly linked which showed very low recombination while others were loosely linked which showed higher recombination. For example, he found that genes for white and yellow body colour were tightly linked and showed only 1.3 percent recombination while white and miniature wing showed 37.2 percent recombination