Changes in a gene's frequency in a population are referred to as mIcroevolution. These are minute adjustments that can happen quickly and may not be noticeable to a casual observer.
Microevolution is the gradual shift in DNA allele frequencies and sequences within a species. These alterations might be the result of mutations, which can repopulate a population with new alleles. The rapidity of microevolution is crucial because it allows viruses, pests, and harvested natural populations to quickly evolve features that are harmful to humans.
Using animals with brief life cycles, such as fruit flies, guppies, and bacteria, which allow testing over many generations, biologists have proved microevolution in the laboratory.
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