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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,

frameshift mutation
nonsense mutation
missense mutation
all of these

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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 the following(s) is/are steps in excision repair mechanisms?

Incision
Excision
Ligation
All of these

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DNA Sequencing, Mutation and Repair
The promoter on an expression vector used to overproduce proteins in bacteria is

the natural promoter of the gene being cloned
a bacterial promoter
expressed both in bacteria and mammalian cells
not a regulated promoter

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

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

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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
a premature termination of the synthesis of a polypeptide
an abnormal elongation of a polypeptide

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