A fruit fly with a black body and rudimentary wings was crossed with a fly with a gray body and normal wings

A fruit fly with a black body and rudimentary wings was crossed with a fly with a gray body and normal wings. what offspring can be expected if the second fly is homozygous for both genes, given that gray body and normal wings are dominant.

Let’s designate the gene that determines the black color of the Drosophila body as k, then the gene for the gray body of this fly will be designated as K.

Let’s designate the gene that determines the development of normal wings in Drosophila as L, then the gene for rudimentary wings will be designated as l.

Drosophila with a black body and rudimentary wings has a dihomozygous kkll genotype, because homozygosity is a condition necessary for the phenotypic realization of recessive traits. Such a fly produces the same type of germ cells kl.

A fly with a gray body and normal wings is homozygous by the condition of the problem – KKLL. It produces the same type of sex cells – KL.

All offspring for 100% of the crossing of the described flies will be uniform and represented by KkLl diheterozygotes, which have a gray body and normal wings.