Question

if the wrinkled-wing mutation in drosophila is dominant and designated wr, a fruit fly with the genotype wr wr would exhibit what phenotype? no wings wrinkled wings one wrinkled wing and one normal wing partially wrinkled wings wild-type wings

Answer 1

In Drosophila, a fruit fly with the homozygous dominant genotype 'wr wr' would exhibit the wrinkled wings phenotype, following the principles of Mendelian genetics.

Step-by-step explanation:

If the wrinkled-wing mutation in Drosophila is dominant and designated as wr, a fruit fly with the genotype wr wr would exhibit wrinkled wings phenotype. This follows the principles of Mendelian genetics, where the dominant trait expresses itself in the phenotype even if there is only one copy of the allele present. However, since the genotype in question is homozygous dominant (wr wr), the fruit fly would definitely show the wrinkled wing phenotype.

Considering the information on Drosophila and genetics provided, we can conclude that for a characteristic where the recessive allele is absent, such as in the genotype wr wr for wing texture, the individual will express the phenotype associated with the dominant allele, which in this case is wrinkled wings. The individual does not exhibit any other wing phenotype as no normal wing allele is present in this genotype.