THE MOLECULAR BASIS OF INHERITANCE
CLONING GENES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
makes a protein that kills the corn borer
|
|
|
makes a protein that helps the corn borer
|
|
|
makes the corn grow faster
|
|
|
makes the corn taste better
|
Detailed explanation-1: -In the case of Bt corn, the donor organism is a naturally occurring soil bacterium, Bacillus thuringiensis, and the gene of interest produces a protein that kills Lepidoptera larvae, in particular, European corn borer. This protein is called the Bt delta endotoxin.
Detailed explanation-2: -U.S. DEPARTMENT OF AGRICULTURE Bt corn is enhanced through biotechnology to protect against insect pests. Its built-in insect protection comes from a naturally occurring microorganism called Bacillus thuringiensis or “Bt.” The protein produced by Bt corn selectively targets caterpillars within the order of Lepidoptera.
Detailed explanation-3: -Bt corn expressing the Cry1Ab toxin is being widely used for the control of corn borers, and commercialization of corn expressing the Cry1Fa protein has recently been approved (Pioneer/Mycogen Seeds).
Detailed explanation-4: -Bacillus thuringiensis (Bt) is a Gram positive, spore-forming bacterium that synthesizes parasporal crystalline inclusions containing Cry and Cyt proteins, some of which are toxic against a wide range of insect orders, nematodes and human-cancer cells.
Detailed explanation-5: -Bt corn hybrids are a highly effective and economical alternative to conventional insecticide treatments, if targeted pest activity is at economically significant levels.