Question

In Drosophila melanogaster, what percentage of recombination is shown between the genes white and yellow, and what percentage of linkage is shown between the genes white and miniature wing, respectively?

• A. 98.7% and 62.8%
• B. 1.3% and 37.2%
• C. 1.3% and 62.8%
• D. 98.7% and 37.2%

Answer 1

Answer: (C)

In Drosophila melanogaster, genes for white and yellow colour are about $1.3$ map unit distant from each other so they show 1.3 % recombinations while 98.7% linkage (or parental characters). Genes for white colour and miniature wing are about 37.2 map unit distant so they show 37.2% recombinations and 62.8% linkage (or parental characters).