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In fruit flies long wings are a dominant trait and short wings are recessive trait Two fruit flies that are heterozygous for the long wings trait mate the cross produces 180 offspring how many are we expected to have short wings

Sagot :

Answer:

45.

Explanation:

Lets say

X= dominant, long wings

x= recessive, short wings

Using Punnett Squares

Xx = heterozygous

Alleles            X           x  

X                   XX         Xx

x                    Xx          xx

Out of 4, only 1 has both recessive short wings, so using the ratio 1/4 × 180 offsprings, 45 of them are expected to have short wings.

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