In flies, red eyes are dominant to brown eyes, while long wings are dominant to dumpy...
In flies, red eyes are dominant to brown eyes, while long wings are dominant to dumpy wings. You will cross a true-breeding fly with red eyes & dumpy wings to a true-breeding fly with brown eyes & long wings.
a. What genotype & phenotype do you expect in the F1 generation?
b. Draw a Punnett Square which represents the F2 generation & give phenotypic ratios.
Homework Answers
Let R for Red eye allele, r for the brown eye, L for long wings and l for dumpy wings.
F1 genotype - RrLl
All the progeny will have a red eye and long wings.
F2 generation
Phenotype ratio - red eye and long wings: Red eye and dumpy wings: Brown eye and long wings: Brown eye and dumpy wings in 9:3:3:1
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