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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
all of these
missense mutation
frameshift mutation

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

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

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DNA Sequencing, Mutation and Repair
Changes in which of the following characterizes mutations?

Phenotype
Genotype
None of these
Both (a) and (b)

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DNA Sequencing, Mutation and Repair
Which of these mechanisms for thymine dimers repair lead to mutations?

Photoreactivation
SOS repair
Excision repair
Never leads to mutation

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

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

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DNA Sequencing, Mutation and Repair
Genetic variations are

not heritable
stable
influenced by the environment
temporary

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