AP BIOLOGY

Detailed explanation-1: -Bt cotton is a genetically modified pest resistant plant cotton variety, which produces an insecticide to combat bollworm .

Detailed explanation-2: -Bacillus thuringiensis (Bt) crops are plants genetically engineered (modified) to contain the endospore (or crystal) toxins of the bacterium, Bt to be resistant to certain insect pests.

Detailed explanation-3: -Bt crops are genetically engineered to carry the gene from the soil bacterium Bacillus thuringiensis. The bacteria produce a protein that is toxic when ingested by certain Lepidopteran insects. Crops containing the Bt gene are able to produce this toxin, thereby provid-ing protection throughout the entire plant.

Detailed explanation-4: -Pest resistant GM crops (primarily cotton and maize), have been genetically modified so they are toxic to certain insects. They are often called Bt crops because the introduced genes were originally identified in a bacterial species called Bacillus thuringiensis.

Detailed explanation-5: -GMO cotton is an insect-resistant transgenic crop designed to combat pests like the bollworm. This particular GMO was created by genetically altering the cotton genome to express a microbial protein from the bacterium Bacillus thuringiensis, better known as Bt.