Question

in the cross li x li, you identified the phenotypic ratio as 3 long wing: 1 short wing. what would be the genotypic ratio?
a. 1 ii: 1 ll
b. 2 ll: 1 li: 1 ii
c. 1 li: 1 ii
d. 1 ll: 2 li: 1 ii

Explanation:

Step1: Determine the genotypes of parents

The cross is \(LI\times LI\).

Step2: Use Punnett square

The possible gametes from each parent are \(L\) and \(I\). The Punnett square is:

	\(L\)	\(I\)
\(I\)	\(LI\)	\(II\)

Step3: Calculate genotypic ratio

From the Punnett square, the genotypes are \(1LL:2LI:1II\)

Answer:

D. \(1LL:2LI:1II\)