To test the safety of polio vaccine, the organisms used are transgenic :
1. Mice
2. Pigs
3. Monkey
4. Cattle
If the goal were to create a plant resistant to an insecticide, which cell-based plant technology would be most effective ?
(1) clonal propagation
(2) cybridization
(3) protoplast fusion
(4) mutant selection
Which kind of therapy was given in 1990 to a four-year-old girl with Adenosine Deaminase (ADA) deficiency?
(1) Gene therapy
(2) Chemotherapy
(3) Immunotherapy
(4) Radiation therapy
The two polypeptides of human insulin are linked together by
(1) phosphodiester bonds
(2) covalent bonds
(3) disulphide bridges
(4) hydrogen bonds
Which part of the tobacco plant is infected by Meloidegyne incognitia?
1. Leaf
2. Stem
3. Root
4. Flower
The introduction of tDNA into plants involves
1. infection of the plant by Agrobacterium tumefaciens
2. altering the pH of soil, heat-shocking the plants
3. exposing the plants to cold for a brief period
4. allowing the plant roots to stand in water
In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to
(1) Alkaline pH of the insect gut
(2) acidic pH of the insect gut
(3) action of gut microorganisms
(4) presence of conversion factors in insect gut
The colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of
(1) Non-recombinant bacteria containing -galactosidase
(2) Insertional inactivation of -galactosidase in non-recombinant bacteria
(3) Insertional inactivation of β-galactosidase in recombinant bacteria
(4) Inactivation of glycosidase enzyme in recombinant bacteria
The process of RNA interference has been used in the development of plants resistant to
(1) fungi
(2) viruses
(3) insects
(4) nematodes
Maximum number of existing transgenic animals is of
(1) mice
(2) cow
(3) pig
(4) fish