Mutation in a virus is caused due to a change in its :
cell size.
genetic material.
shape.
colour.
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This question was previously asked in
UPSC CDS-1 – 2022
Viruses store their genetic information in the form of either DNA or RNA. A mutation is a change in the sequence of nucleotides in this genetic material. These changes can occur spontaneously during replication or be induced by external factors (mutagens). Mutations are the primary source of genetic variation in viruses, which can lead to changes in their characteristics, such as infectivity, virulence, or ability to evade host immune responses.