Multiple Choice QuestionsWhich of the following is not required for any of the techniques of DNA fingerprinting available at present?
Zinc finger analysis
Restriction enzymes
DNA-DNA hybridization
DNA-DNA hybridization
Which part of the tobacco plant is infected by Meloidogyne incognitia?
Leaf
Stem
Root
Root
Golden rice is a genetically modified crop plant where the incorporated gene i's meant for
Vitamin B
Vitamin C
Omega 3
Omega 3
A pleiotropic gene
is expressed only in primitive plants.
is a gene evolved during Pliocene
controls a trait only in combination with another gene
controls a trait only in combination with another gene
Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells).
Both sense and anti-sense RNA
A particular hormone
An antifeedant
An antifeedant
The first clinical gene therapy was given for treating
diabetes mellitus
chicken pox
rheumatoid arthritis
rheumatoid arthritis
In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to
alkaline pH of the insect gut
acidic pH of the insect gut
action of gut microorganisms
action of gut microorganisms
A.
alkaline pH of the insect gut
The Bt toxin is an inactive protoxin, which is activated due to the alkaline pH in the insect gut.
Bt toxin dissolve in high pH of insect gut and become active. The toxins then attack the gut cells of the insect, punching holes in the lining.
(i) Insect eats Bt crystals and spores.
(ii) The toxin binds to specific receptors in the gut and the insects stops eating.
(iii) The crystals cause the gut wall to break down allowing spores and normal gut bacteria to enter the body.
(iv) The insect dies as spores and gut bacteria proliferate in the body.
The crops engineered for glyphosate are resistant/ tolerant to
fungi
bacteria
insects
insects
Read the following four statements (I - IV) about certain mistakes in two of them
I .The first transgenic buffalo, Rosie produced mile which was human alpha - lactal bumin enriched
II. Restriction enzymes are used in isolation of DNA from another macro -molecules.
III. downstream processing is one of the steps of R-DNA technology.
IV. Disarmed pathogen vectors are also used in the transfer of R - DNA into the host.
Which are the two statements having mistakes?
Statement (II) and (III)
Statements (III) and (IV)
Statements (I) and (III)
Statements (I) and (III)
Switch
