Multiple Choice QuestionsWhich one of the following a wrongly matched?
Transcription - Writing information from DNA to t-RNA
Translation - Using information in m - RNA to make protein
Repressor protein - Binds to operator to stop enzyme synthesis
Repressor protein - Binds to operator to stop enzyme synthesis
Transformation was discovered by
Meselson and Stahi
Hershey and Chase
Griffith
Griffith
The first human hormone produced by recombinant DNA technology is
insulin
estrogen
thyroxin
thyroxin
An analysis of chromosomal DNA using the Southern hybridization technique does not use
electrophoresis
blotting
autoradiography
autoradiography
Removal of RNA polymerase -III from nucleoplasm will affect the synthesis of
tRNA
rRNA
mRNA
mRNA
PCR and Restriction Fragment Length Polymorphism are the methods for
Study of enzymes
Genetic transformation
DNA sequencing
DNA sequencing
D.
DNA sequencing
The hypervariable regions of DNA have Variable Number of Tandem repeats (VNTRs) of short nucleotide sequences which are specific for each individual (except for monozygotic twins). Variations also occur due to mutations, small deletions or insertions. Therefore, DNA cut by a particular endonuclease will have different lengths in different persons. This phenomenon is called Restriction Fragment Length Polymorphism. It is the basis of genetic (Or DNA) fingerprinting and is useful in identifying individuals from their semen, blood or tissues or any other DNA sample and resolution of parent-hood disputes.
Polymerase Chain Reaction (PCR) is also useful in genetic fingerprinting as it can amplify the DNA sample even if available in a very small amount
Which one of the following is not a part of a transcription unit in DNA?
The inducer
A terminator
A promoter
A promoter
A single strand of nucleic acid tagged with a radioactive molecule is called
vector
selectable marker
plasmid
plasmid
It is used to ligate introduced DNA in recipient cells
It serves as a selectable marker
It is isolated from a virus
It is isolated from a virus
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