Question

In Morgan's experiments on linkage, the percentage of white-eyed miniature-winged flies obtained as recombinants in the \(F_2\) generation is

• A. \(37.2\%\)
• B. \(1.3\%\)
• C. \(62.8\%\)
• D. \(32.7\%\)

Hint:

Morgan's famous linkage results: \[ \boxed{ \begin{aligned} &\text{Parental types} &&=62.8\% &\text{Recombinant types} &&=37.2\% \end{aligned} } \] These observations provided evidence for crossing over.

Answer 1

The Correct Option is A

Step 1: Recall Morgan's linkage experiment. Morgan studied the genes for \[ \boxed{\text{white eye}} \] and \[ \boxed{\text{miniature wing}} \] in Drosophila. These genes showed incomplete linkage due to crossing over.

Step 2: Recall the recombination frequency. The recombinant progeny constituted \[ \boxed{37.2\%} \] of the total offspring.

Step 3: Choose the correct option. Hence, the correct option is \[ \boxed{(A).} \]