Question

The genes for the eye colour and size of the wing in Drosophila are located on the same chromosome. They can be separated/ recombinants develop due to

• A. Non-disjunction
• B. Crossing over
• C. Hybridization
• D. Not be separated at any stage

Answer 1

The correct option is B Crossing over

The crossing over may happen if two genes are far apart ie. chances of crossing over increases as the distance between two genes within a chromosome increases. Crossing over may lead to the formation of recombinants.

So, the correct answer is 'Crossing over'.