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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