Principle Of Inheritance And Variation Question 414
Question: In fruit flies, dumpy wings are shorter and broader than normal wings. The allele for normal wings [D] is dominant to the allele for dumpy wings [d]. Seventy five normal-winged and twenty five dumpy-winged flies. The genotype of parents would be.
Options:
A) DD and D
B) DD and Dd
C) Dd and Dd
D) Dd and dd
Show Answer
Answer:
Correct Answer: C
Solution:
[c] If both parents have normal wings (DD or Dd), there are three possible parent crosses: DD x Dd, Dd x Dd, or Dd x Dd.
All of the progeny of DD x DD and of DD x Dd would have normal wings.
Only the progeny of Dd x Dd would consist of 3/4 normal winged flies.
BETA
