Genetic Diversity and Mutations

Analyzing DNA codeMutations are permanent changes in an organism's DNA or chromosomes. Mutations can occur during DNA replication because mistakes are made when nucleotides are added to a DNA strand. Mutations can also occur because chromosomes break or pieces of chromosomes are swapped with non-homologous chromosomes. Mutations can also occur because mutagens like chemicals and radiation cause chemical changes in the nucleotides of the DNA. Mutations can be harmful and cause disease and disorders; however, not all mutations have negative effects. Mutations create genetic diversity in a population, and are sometimes beneficial.