Mutations accumulate in dna over succeeding generations and are the ultimate source of new genetic variation.
Gene variants, sometimes known as mutations, can cause genetic differences, or a normal process in which genetic information is rearranged as a cell prepares to divide can also cause genetic variations (known as genetic recombination).
Different phenotypes can be introduced into an organism by genetic changes that change gene activity or protein function.
By changing genes and alleles in a population, mutations cause genetic variety.
They could affect a single gene or a whole chromosome. Although mutations alter an organism's genotype (genetic make-up), the phenotype of an organism may not always be altered.
For instance, dogs and humans have different-sized tails and different-colored eyes.
This implies that no two individuals within a species are alike. Variation refers to the differences that exist between individuals within a species.
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