Question

BT cotton is the first genetically modified crop in India. In transgenic BT Cotton, the product of incorporated bacterial gene is a. beta exotoxin b. delta exotoxin C. theta exotoxin d. delta endotoxin. ​

Answer 1

d. delta endotoxin is the correct answer.

1. Bt stands for bacterium named Bacillus thuringiensis.
2. This bacteria is known to produce a toxin that can kill pests and hence finds use as biopesticide.
3. Bt cotton is formed by insertion of genes encoding for cry genes that produce crystal protein or cry toxin.
4. Bt cotton showed increase in yield, resistance to pests, prevents health hazards from insecticides etc.

Answer 2

In transgenic BT cotton, the product of incorporated bacterial gene is a delta endotoxin

Explanation:

• Bt cotton is first in genetically modified crop in India
• Bacillus- thuringiensis (Bt) cotton is a gram positive bacterium during sporulation produced crystal protein Cry1Ac -protoxin.

• Bt cotton produced one of the delta endotoxin can act as an insecticides.

• Due to having these genes the Bt cotton considered as important crop for genetic engineering, to introduce a pest resistances on those plant