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Mutation cann...

Question

Mutation cannot change

A

RNA

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B

Environment

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C

Enzyme

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D

DNA

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Solution

The correct option is D Environment
Mutation is a sudden heritable change in the genetic material of an organism. It has nothing to do with environment. Alterations in environment can cause mutations gradually, whereas the reverse is not possible.

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Similar questions

Q. All mutations in genetic material may not lead to change in amino acid composition. Though there is a change in the codon, it is not expressed in the amino acids. Such mutations are called as silent mutations'. Which of the following alteration of codons ATTGCC is not a silent mutation?

Q. Which of the following statement(s) are correct with respect to mutation?
I. Insertion or deletion of 3 bases or its multiple does not change the reading frame from that point onwards
II. Mutation may occur due to the defects in the duplication of DNA
III. Mutations can be caused by certain chemicals

Q. Define mutation. Illustrate the types of mutations that can arise by change in chromosome structure.

Deletion mutation can also cause a frameshift mutation.

Q. Two Mark Questions :
A relevant portion of

β

-chain of haemoglobin of a normal human is
Val-His-Leu-Thr-Pro-Glu-Glu
1 2 3 4 5 6 7
The codon for the sixth amino acid is GAG. It mutates to GAA due to mutation 'A' and GUG due to mutation 'B'. Haemoglobin structure did not change as a result of mutation 'A' but mutation 'B' led to sickle cell-shaped RBCs. Explain giving reasons how could mutation 'B' change the haemoglobin structure and not mutation 'A'.

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