In fruit flies the allele for long wings (L) is dominant and the allele for short wings (l) is recessive. What is the likely genotype of a fruit fly with short wings?

Answer 1

A fruit fly with short wings must have the genotype that carries two copies of the recessive allele, since short wings (l) are expressed only when the dominant allele (L) is not present. Therefore, the likely genotype of a fruit fly with short wings is homozygous recessive, which is ll.