Test Preparation on Biotechnology - Biology Test Series for NEET - 2020
The linking of antibiotic resistance gene with the plasmid
vector became possible with
Main objective of production./use of herbicide resistant GM
crops is to
Which of the following is commonly used as a vector for
introducing a DNA fragment in human lymphocytes
Branch dealing with genetic engineering is
Who among the following scientists is associated with the
discoveries in genetic engineering
(a) Hargovind Khorana is associated with genetic
engineering. He synthesized ‘gene’ artificially’ in a test
tube (1969).
Which of the following organelles is related with genetic
engineering/gene cloning
(d) Plasmids are extrachromosomal covalently closed
circular double stranded molecules of DNA present in
most prokaryotes. Therefore they are used as a vector
in genetic engineering.
In genetic engineering, a DNA segment (gene) of interest, is
transferred to the host cell through a vector. Consider the
following four agents (A-D) in this regard and select the
correct option about which one or more of these can be
used as a vector/vectors
Statements
(A) A bacterium (B) Plasmid
(C) Plasmodium (D) Bacteriophage
Options
(d) Plasmids and bacteriophages are used as vectors in
genetic engineering.
Recombinant DNA (rDNA) technology is related with
(d) The first recombinant DNA was constructed by
Stanley cohen and Herbert in 1972. They cut the
piece of DNA from a plasmid carrying antibioticresistance
gene in the bacterium Salmonella
typhimurium and linked it to the plasmid of
Escherichia coli.
Identify the plasmid
(d) Plasmid pBr 322 was one of the first widely used
cloning vectors, it contains both ampicillin and
tetracycline resistance genes.
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