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DNA Sequencing, Mutation and Repair

DNA Sequencing, Mutation and Repair
The mutation which will not affect the length of a protein is,

nonsense mutation
missense mutation
all of these
frameshift mutation

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DNA Sequencing, Mutation and Repair
Thymine dimers are directly repaired with the help of visible light by process known as

photoreactivation
excision repair
phosphorylation
photosynthesis

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DNA Sequencing, Mutation and Repair
Which of the following(s) is/are steps in excision repair mechanisms?

Incision
Ligation
All of these
Excision

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DNA Sequencing, Mutation and Repair
What was the first eukaryotic chromosome to be sequenced?

Yeast chromosome III
None of these
Yeast chromosome XI
Arabidopsis chromosome IV

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DNA Sequencing, Mutation and Repair
A nonsense mutation may result into

an abnormal elongation of a polypeptide
modification of mRNA
a premature termination of the synthesis of a polypeptide
a large deletion within the reading frame of a gene

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DNA Sequencing, Mutation and Repair
A nonsense mutation introduced into the DNA sequence of a gene may

have no effect on the transcript or protein made
shorten the length of the protein encoded by the gene
cause premature termination of the mRNA
cause a shift in reading frame

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