What is mutation?

  • (noun): (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organism.
    Synonyms: genetic mutation, chromosomal mutation
    See also — Additional definitions below

Mutation

Part of a series on
Genetics
Key components

Chromosome
DNA • RNA
Genome
Heredity
Mutation
Nucleotide
Variation

Read more about Mutation.

Some articles on mutation:

Breton Mutations - Mixed Mutation - Effects
... The mixed mutation causes The soft mutation of b /b/ → v /v/, g /ɡ/ → c'h /x/, gw /ɡw/ → w /w/, m /m/ → v /v/ Hard mutation of d /d/ → t /t/ ...
Clearwing Budgerigar Mutation - Genetics
... The Clearwing mutation is one of the few that affect different areas of the body selectively ... Like many budgerigar mutations, it is the black melanin pigment that is affected ... The Clearwing mutation causes a large reduction in the number of pigment granules in the cortex, but only a very small reduction in the number of pigment granules in the medulla ...
Somatic Mutation Rate
... a parent, and also not passed to offspring, is called a somatic cell genetic mutation or acquired mutation ... Cells with heterozygous mutations (one good copy of gene and one mutated copy) may function normally with the unmutated copy until the good copy has been spontaneously somatically mutated ... This kind of mutation happens all the time in living organisms, but it is difficult to measure the rate ...
Somatic Evolution In Cancer - Glossary
... cancer biology and evolutionary biology Driver mutation = a mutation that gives a selective advantage to a clone in its microenvironment, through either increasing its survival or ... Driver mutations tend to cause clonal expansions ... Passenger mutation = a mutation that has no effect on the fitness of a clone but may be associated with a clonal expansion because it occurs in the same genome with a driver ...
Clearwing Budgerigar Mutation
... The Clearwing budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars ... It is the underlying mutation of the Clearwing variety, often known as Yellowwings in the green series and Whitewings in the blue series ... When combined with the Greywing mutation the variety is known as the Full-bodied Greywing ...

More definitions of "mutation":

  • (noun): A change or alteration in form or qualities.
  • (noun): (biology) an organism that has characteristics resulting from chromosomal alteration.
    Synonyms: mutant, variation, sport