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DNA Sequencing, Mutation and Repair

DNA Sequencing, Mutation and Repair
Which of the following mutation affects only a single nucleotide?

Site mutation
Aerial mutation
Regional mutation
Point mutation

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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
cause a shift in reading frame
shorten the length of the protein encoded by the gene
cause premature termination of the mRNA

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

frameshift mutation
all of these
nonsense mutation
missense mutation

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

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

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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
Genetic variations are

temporary
not heritable
influenced by the environment
stable

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