Question

In fruit flies, long wings are a dominant trait (L) and short wings are a recessive trait (l). Two fruit flies that are heterozygous for the long wings trait mate. The cross produces 180 offspring. How many of the offspring are expected to have short wings?

0
45
90
180

Answer 1

45

Explanation

because 25% of the flies eat on it

Answer 2

25% of the offspring, or 45 (B).

Step-by-step explanation:

If they are heterozygous, they are Ll and Ll. Put it in a Punnet square, the l and l match up in 1/4 squares to make 25% of the total flies.