Chemicals, radiation, and copying and repairing errors can cause chromosomal DNA-sequence damage {mutation}|. People can inherit changed genotypes.
types
Single nucleotides, short regions, genes, and chromosomes {muton} can mutate. Mutations include nucleotide deletions, insertions, and changes {point mutation}. Mutations include chromosome number or structure changes. DNA regions can delete, insert, invert, double, and alter.
rate
Trait mutation rate is 10^-4 to 10^-6 per generation. One to ten percent of cells have mutations.
affects
Mutations are typically bad, but bad mutations can be good in new environments. Mutations degrade good, working genetic code to make it more variable, and this process adds to genetic variability. Higher mutation rates affect organisms with more genes more.
experiments
In animals or plants, to discover if genes {candidate gene} relate to diseases, researchers mutate genes to see if mutation causes disease symptoms.
Biological Sciences>Genetics>Mutation
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224