Human cells have 23 46 32 64 pairs of chromosomes. an abnormality of one or more genes is called allele mutation genetic variant

-23 pairs of chromosomes.

-Mutation.

Explanation:

Humans are diploid organisms, having two sets of chromosomes. In humans, each somatic cell contains 23 pairs of chromosomes (46 chromosomes).

Mutations can be defined as changes in genetic material due to alteration in the nucleotide sequence of DNA. As genes are segments of DNA, abnormality in genes is also called mutations.

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