Question

How did morgan show the deviation in inheritance pattern in Drosophila with respect to this law?

Answer 1

 Morgan’s Experiment

Thomas Hunt Morgan used Drosophila melanogaster(fruit flies)to show how sexual reproduction gave rise to variations. He chose to work on Drosophila melanogaster for the following reasons:

They could be easily cultivated in the laboratory on synthetic medium.They have a short lifespan (two weeks).They could produce numerous progeny in a single mating.The male and female sexes are differentiable.They are different types of hereditary variations.

As Mendel’s dihybrid cross in peas, Morgan conducted dihybrid cross between yellow-bodied, white-eyed females and brown-bodied, red-eyed males. Shockingly, the self-crossing of F1 generation gave an F2generation but not in the ratio of 9:3:3:1. The result showed a deviation from Mendel’s dihybrid cross.