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DNA Sequencing, Mutation and Repair

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

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

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DNA Sequencing, Mutation and Repair
Differentiation of four different bases in automated sequencing systems is that each base has

different radioactive tag
distinctive fluorescent tag
cytosine at start
unique antibody bound to it

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

SOS repair
Excision repair
Photoreactivation
Never leads to mutation

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

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

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DNA Sequencing, Mutation and Repair
Genetic variations are

stable
temporary
influenced by the environment
not heritable

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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
photosynthesis
phosphorylation

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