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DNA Sequencing, Mutation and Repair

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
A nonsense mutation may result into

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

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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
missense mutation
nonsense mutation

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DNA Sequencing, Mutation and Repair
Frame shift mutation may occur as a result of

deamination of cytosine to uracil
None of these
conversion of guanine to xanthine
formation of a thymine-dimer

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DNA Sequencing, Mutation and Repair
Which of the following mutations arise without exposure to external agents?

Induced mutations
None of these
Spontaneous mutations
Analogous mutations

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DNA Sequencing, Mutation and Repair
Which of the following bacterial genome was sequenced first?

E. coli
H. influenzae
S. pneumoniae
S. thermophilus

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