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

Golden rice is a genetically modified crop plant where the incorporated gene is meant for

biosynthesis of

1. vitamin-B

2. omega 3

3. vitamin-C

4. vitamin-A

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

A single strand of nucleic acid tagged with a radioactive molecule is called

1. vector

2. selectable marker

3. plasmid

4. probe

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

The genetically-modified (GM) brinjal in India has been developed for

1. insect-resistant

2. enhancing self life

3. enhancing mineral content

4. drought-resistance

DNA or RNA segment tagged with a radioactive molecule is called

1. vector

2. probe

3. clone

4. plasmid

Genetic engineering has been successfully used for producing

(1) transgenic mice for testing safety of polio vaccine before use in humans

(2) transgenic models for studying new treatments for certain cardiac diseases

(3) Transgenic cow-Rosie which produces high fat milk for making ghee

(4) animals like bulls for farm work as they have super power