Question

Wild type (W$^{+}$) allele in Drosophila shows ........... phenotype for eye colour.

• A. Blood
• B. Cherry
• C. Red eye
• D. Buff

Hint:

Remember: Wild type (W$^{+}$) = red eye in Drosophila. Mutation (w) = white eye.

Answer 1

The Correct Option is C

Step 1: Background on Drosophila eye colour.
In genetics, Drosophila melanogaster (fruit fly) is widely studied for inheritance patterns.
The wild-type allele (W$^{+}$) is the normal allele found in natural populations.
Step 2: Phenotype of W$^{+$ allele.}
The W$^{+}$ allele produces red eye colour, which is considered the normal or standard phenotype of fruit flies.
The white-eyed mutation (w) results when the W$^{+}$ allele is absent or defective.
Step 3: Analysis of options.
- (A) Blood: Not associated with eye phenotype.
- (B) Cherry: Not the correct genetic term used for wild-type phenotype.
- (C) Red eye: Correct, this is the classic wild-type eye colour in Drosophila.
- (D) Buff: Represents another mutation, not the wild-type.
Step 4: Conclusion.
Thus, W$^{+}$ allele in Drosophila shows red eye phenotype.