Question

In Morgan's experiment involving dihybrid cross, what will be percentage of recombination with respect to body colour and eye colour in F${}_2$ generation?

• A. 37.2%
• B. 1.3%
• C. 98.7%
• D. 27.3%

Answer 1

The correct option is B 1.3%

It was Morgan (1910) who clearly proved and defined linkage on the basis of his breeding experiments in fruitfly Drosophila melanogaster.
In his experiments involving dihybrid cross to study the pattern of inheritance of body color and eye color in Drosophila, he crossed yellow bodied, white eyed female flies with wild type male flies. The percentage of offsprings with recombinant phenotypes for the characters in the F${}_2$ generation was found to be 1.3%. This included the offspring flies having brown body, white eyes or yellow body, red eyes.
The remaining 98.7% of the F${}_2$ offsprings had parental phenotypes, that is, yellow body, white eyes or brown body, red eyes.