Four Forces Of Evolution: Mutations, Genetic Drift, And Natural Selection

The four forces of evolution include mutation, gene flow, genetic drift, and natural selection. Mutation occurs when the base pairs in DNA change which leads to different codons being read during translation. Most mutations create codons for the same amino acid that the normal codon would have made but sometimes a different amino acid is made and that leads to changes in the organism's phenotype. Gene flow happens when two different populations come together and reproduce with each other. The offspring from that will be a mixture of the two populations' characteristics. Over the generations, the two populations will become more and more alike. Genetic drift is when the frequency of an allele randomly changes and gets passed down through the