Dihybrid crosses of (virtual) fruit flies (Drosophila melanogaster) were carried out at the computer lab at...

Dihybrid crosses of (virtual) fruit flies (Drosophila melanogaster) were carried out at the computer lab at this course. The mutant alleles studied were “vestigial wing” (vg) and “ebony body” (eb). The mutant P‐generation flies were homozygous recessive at both studied loci. The wild type alleles were homozygous dominant at both loci. The loci for vestigial wing and ebony body are located at separate chromosomes. Show the Punnett crosses from the P‐generation to the F1‐generation of mutant and wild type flies, and the Punnett cross when two individuals from the F1‐generation were crossed.

Expert Solution

When F1 is crossed, phenotypically 4 different varities are observed in 9:3:3:1 ratio

9 normal winged normal bodied wild

3 normal wing ebony body (red colour)

3 vestigial wing normal body ( green colour )

1 vestigial wing ebony body ( pencil shade) double recessive

gladiator answered 1 year ago

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