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Question

Gene mutation is caused by

A
Linkage
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B
Reproduction
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C
Changes in sequence of chromosome
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D
Changes in sequence of nitrogenous bases
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Solution

The correct option is D Changes in sequence of nitrogenous bases
A gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people. Mutations range in size; they can affect anywhere from a single DNA building block (base pair) to a large segment of a chromosome that includes multiple genes.

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