Untranslated regions (UTRs) are present
before and after the stop codon
after the start codon and before the stop codon
before and after the start codon
before the start codon and after the stop codon
Polypeptides are
dictated by DNA
represented by mRNA
Expresssion of t-RNA
Both 1 and 2
Protein synthesis takes place in
cytoplasm
nucleoplasm
none of these
The reaction, Amino acid + ATP = Aminoacyl-AMP + P-P depicts
Amino acid assimilation
Amino acid transformation
Amino acid activation
Amino acid translocation
Percentage of base sequences which are dissimilar among humans is
99.9%
0.01%
0.10%
1.01%
How many base sequences would be different in the genome of two human beings-
3million
3 billion
6.2 million
30million
Differences in sequence of DNA make every individual unique in their
total number of nucleotides
phenotypic appearance
both 1 and 2
None of these
DNA fingerprinting is used to compare
similar sequences between two individuals
dissimilar sequences between two individuals
3 million base pairs of two individuals
Both 2 and 3
DNA fingerprinting identifies differences in
repetitive DNA
bulk DNA
satellite DNA
During density gradient centrifugation, major peaks are formed by
Genomic DNA
Both 1 and 3
During density gradient centrifugation, minor peaks represent
Satellite DNA
Satellite DNA classification is based on
Base composition
length of segment
no of repetitive units
All of the above
Satellite DNA are
Protein coding
M-RNA coding
non- protein coding
satellite protein coding
What forms the basis of DNA fingerprinting
Bulk DNA
Satellite DNA shows
high degree of polymorphism
low degree of polymorphism
no polymorphism
Polymorphism in DNA forms the basis of
genetic mapping
DNA fingerprinting
The existence of polymorphism is due to
mutation
crossing over
migration
both A and B
How many of these statements are true for polymorphism
(A)it is inheritable
(B)it arises due to mutation
(C)it varies at genetic level
(D)it is the basis of genetic mapping
(E)it is important for evolution and speciation
(F)It varies from single nucleotide to large scale
6
5
4
3
In DNA fingerprinting probe used is made up of
genomic DNA
RNA
Protein
VNTR stands for
Variable number of Tendon repeats
variable number for tendem repeats
variable number of tandem repeats
variable number of term repeats
The transferring of separated RNA fragments to synthetic membranes is called
Southern hybridisation
Northern hybridisation
Western hybridisation
Eastern hybridisation
The technique of DNA fingerprinting involves the following events in the order
1. isolation of DNA
2. DNA digestion by Restriction Endonuclease
3. DNA separation
4. Southern blotting
5. Hybridisation
6. Autoradiography
654321
132456
123456
132546
VNTR belongs to which class of DNA
mini-satellite
macro-satellite
nano-satellite
kilosatellite
The size of VNTR varies from
0.1 to 20 kb
0.1 to 200 kb
1 to 20 kb
0.10 to .20 kb
The DNA fingerprinting is same for
cousins
monozygotic twins
Dizygotic twins
siblings
The DNA fingerprinting has applications in
forensic sciences
population genetics
genetic diversities determination
Father of DNA fingerprinting is
H.J.Khorana
Alec Jeffreys
Karry Mullis
E.M Southern
The DNA molecule takes a complete turn after
Every base pair
Every five base pairs
Every ten base pairs
Every two base pairs
Genes are made up of
Histone
A portion of DNA
Hydrocarbons
Lipoproteins
Which of the following is correct with regards to the arrangement of DNA in the chromosome?
There are several DNA helices in a chromosome , which are joined together with the help of the protein linkers
Each chromosome has bundles of DNA duplexes , much like a rope
A single DNA double helix is highly coiled and folded along the length of the chromosome
Each chromosome is made up of two DNA helices , which are highly folded
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