Question

Resistance against Manduca sexta was conferred by transferring _____________ genes using transgenics.

• A. Bt
• B. CpT I
• C. Cry III
• D. Lambda A I

Answer 1

Answer:

A. Bt

Bt (Bacillus thuringiensis) genes.

• Bt genes encode for a toxin that is poisonous to certain insect pests, including the tobacco hornworm (Manduca sexta).

• By transferring Bt genes into plants using genetic engineering (transgenics), scientists have been able to create crops that are resistant to certain insect pests.

• This technology has been widely used to develop insect-resistant crops, such as Bt corn and Bt cotton.