NEET BIOLOGY

Detailed explanation-1: -In fruit flies, the grey body colour is dominant to the black, and long wings are dominant to short.

Detailed explanation-2: -In fruit flies, the gene for body color has two different alleles: the black allele and the brown allele. Moreover, brown body color is the dominant phenotype, and black body color is the recessive phenotype.

Detailed explanation-3: -The Drosophila melanogaster is the most well known of fruit flies. It has four chromosomal pairs: one that determines sex and three autosomal chromosomes. Each chromosome has two arms, referred to as the left and the right.

Detailed explanation-4: -In Drosophila, white eye colour is recessive X-linked trait while red eye colour is dominant. A white eyed female is crossed with red eyed male.