Question

This is the method of making GM crops resistant to the attack of pests. Pick up the correct befitting match.

• A. A- Ti plasmid from Agrobacterium, B- Bacillus thurigensis, C- Recombinent DNA of plasmid of Agrobacterium tumefaciens and Bt genes of Bacillus thuringensis, D- Bt cotton killing larvae of bollworm, E- Bt gene
• B. A- Bt gene, B- Bacillus thuringensis, C- Recombinent DNA of plasmid of Agrobacterium tumefaciens and Bt genes of Bacillus thuringensis, D- Bt cotton killing larvae of bollworm, E- Ti plasmid from Agrobacterium
• C. A- Ti plasmid from Agrobacterium, B- Recombinent DNA of plasmid of Agrobacterium tumefaciens and Bt genes of Bacillus thuringensis, C-Bacillus thurigensis, D- Bt cotton killing larvae of bollworm, E- Bt gene
• D. A- Bt gene, B- Bt cotton killing larvae of bollworm, C Recombinent DNA of plasmid of Agrobacterium tumfaciens and Bt genes of Bacillus thuringensis, D- Bacillus thurigensis, E- Ti plasmid from Agrobacterium

Answer 1

The correct option is A A- Ti plasmid from Agrobacterium, B- Bacillus thurigensis, C- Recombinent DNA of plasmid of Agrobacterium tumefaciens and Bt genes of Bacillus thuringensis, D- Bt cotton killing larvae of bollworm, E- Bt gene

Agrobacterium tumefaciens causes crown gall disease of cotton. The bacterium transfers part of its DNA to the plant, and this DNA integrates into the plant's genome, causing the production of tumors and associated changes in plant metabolism. A. tumefaciens have been used extensively for the genetic engineering of plants. This is achieved by engineering selected genes into the T-DNA of the bacterial plasmid in laboratory conditions so that they become integrated into the plant chromosomes when the T-DNA is transferred. Several crop plants have been engineered to express the insecticidal toxin gene of Bacillus thuringiensis, so that insects attempting to eat these plants are killed.

Therefore, the correct answer is option A.