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DNA Sequencing, Mutation and Repair

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
Differentiation of four different bases in automated sequencing systems is that each base has

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

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DNA Sequencing, Mutation and Repair
Which of the following mutation affects only a single nucleotide?

Regional mutation
Aerial mutation
Point mutation
Site mutation

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DNA Sequencing, Mutation and Repair
A nonsense mutation introduced into the DNA sequence of a gene may

have no effect on the transcript or protein made
shorten the length of the protein encoded by the gene
cause premature termination of the mRNA
cause a shift in reading frame

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DNA Sequencing, Mutation and Repair
Which of the following(s) is/are steps in excision repair mechanisms?

Ligation
Excision
Incision
All of these

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

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

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