In a cross in Drosphila, the heterozygous animal with grey body $\left(b^{+}\right)$ and long wings $\left(v{g}^{+}\right)$ was crossed with an animal with black body and vestigial wings. The progeny has the animals in the following ratio : Grey vestigial 24; grey long 126; black long26 ; black vestigial 124. What is the frequency of recombinants in the population?

Q. In fruit flies, the grey body colour is dominant to the black, and long wings are dominant to short. On the crossing of a grey, short-winged fly and a black, long-winged fly, produces 25 percent grey, long wing, 25 percent grey, short wing, 25 percent black, short wing, and 25 percent black, long wing, the genotypes of the parental flies is

Q. A cross was done between dominant wild type grey bodied male drosophila melanogaster having developed wing, with recessive mutant yellow bodied female fly having vestigial wing. $F_1$ offsprings of the above cross were as follows-

(a) All females were of wild type variety with grey body and developed wing

(b) All males were of mutant type with yellow body and vestigial wing

Based on information given above, identify the genotype of parental generation form options given below-

Q. Choose the correct answer from the alternatives given.

Q. In fruit flies, allele for long wing is dominant to the allele for vestigial wing. When heterozygous long winged flies were crossed with vestigial winged flies, 192 offsprings were produced. Of these 101 had long wing & 91 had vestigial wings.
If an exact Mendelian ratio had been obtained, then the number of each phenotype would have been

Q. In Drosophila, normal wings (+) are dominant to vestigial wings (vg) and the presence of eyes (+) is dominant to being eyeless (ey). The offspring of a cross between two unknown parents yielded the following results: 299 normal winged, normal eyed flies; 106 normal winged, eyeless flies; 99 vestigial winged, normal eyed flies, and 33 vestigial winged, eyeless flies.
What genotypes did the parent generation most likely possess?