Question

Insect-resistant transgenic cotton has been produced by inserting a piece of DNA from ?

• A. An insect
• B. A bacterium
• C. A wild relative of cotton
• D. A virus

Answer 1

The correct option is B A bacterium

Scientists inserted a toxin gene from the bacterium called Bt (which is the nickname for Bacillus thuringiensis) into cotton plants to create a caterpillar-resistant variety. The gene is DNA that carries the instructions for producing a toxic protein.

So the correct answer is option B.