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DNA Sequencing, Mutation and Repair

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

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

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

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

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DNA Sequencing, Mutation and Repair
Genetic variations are

temporary
stable
not heritable
influenced by the environment

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

frameshift mutation
nonsense mutation
all of these
missense mutation

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

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

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

Never leads to mutation
Photoreactivation
Excision repair
SOS repair

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