Which of the following is TRUE about mutation? - ProProfs Discuss
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Which of the following is TRUE about mutation?



A. Acceptable variations in the ‘normal’ DNA and protein sequences
B. The exchange of DNA between chromosomes during meiosis.
C. The movement of a ribosome from one reading frame to another at an internal position within a gene
D. A DNA repair process that corrects various types of DNA damage by excising and resynthesizing a region of polynucleotide
E. Permanent, heritable alterations in the base sequence of the DNA.

This question is part of Quiz 2: DNA damage, repair and recombination
Asked by Biomolfa, Last updated: Nov 01, 2019

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2 Answers

A. Lucius

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A. LuciusSenior Content writer, Diploma in Literature, Dover, Delaware
Senior Content writer, Diploma in Literature, Dover, Delaware

Answered on Nov 01, 2019

The correct answer is option E – Permanent, heritable alterations in the base sequence of the DNA. A mutation refers to changes or alterations of the base-pair sequence in genetic material. These alterations are permanent and cannot be corrected. Mutation can be inherited or acquired as a result of environmental factors such as smoking and sunlight.

There are three types of mutations – silent, missense, and nonsense mutation. If the amino acid produced is different from the initial amino acid at the site of the change, a nonsense mutation or missense mutation has occurred. This will affect the function and structure of the protein produced. This mutation also causes premature signals to stop making protein resulting in a shortened protein that will not function properly.

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biomolfa

Biomolfa

Answered on Jun 19, 2018

Permanent, heritable alterations in the base sequence of the DNA.
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