Mutation | Definition, Causes, Types, & Facts | Britannica
5 天之前 · Mutation, an alteration in the genetic material (the genome) of a cell of a living organism or of a virus that is more or less permanent and that can be transmitted to the cell’s or the virus’s descendants.
Mutation Definition & Meaning - Merriam-Webster
The meaning of MUTATION is a significant and basic alteration : change. How to use mutation in a sentence.
Mutation - Wikipedia
In contrast to a DNA damage, a mutation is an alteration of the base sequence of the DNA. Ordinarily, a mutation cannot be recognized by enzymes once the base change is present in both DNA strands, and thus a mutation is not ordinarily repaired. At the cellular level, mutations can alter protein function and regulation.
Mutation
1 天前 · A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
Mutation - Definition, Types, Examples and Quiz - Biology …
2017年4月4日 · Mutation Definition. At the simplest level, a mutation is a change or transformation. In biology, mutations refer to changes in chromosomes and genes, which typically manifest physically. The effect of a mutation can depend on the region in which the sequence of genetic material has been changed.
Mutation - Definition and Examples - Biology Online Dictionary
A mutation is a permanent, heritable change in the nucleotide sequence or the process by which such a change occurs in a gene or in a chromosome. There are two major types of mutations: small-scale and large-scale. Small-scale mutations are genetic mutations, often in the form of substitutions, deletions, and insertions of one or more nucleotides.
MUTATION | English meaning - Cambridge Dictionary
MUTATION definition: 1. the way in which genes change and produce permanent differences: 2. a permanent change in an…. Learn more.
MUTATION | definition in the Cambridge English Dictionary
MUTATION meaning: 1. the way in which genes change and produce permanent differences: 2. a permanent change in an…. Learn more.
mutation | Learn Science at Scitable - Nature
A mutation is a change in a genetic sequence. Mutations include changes as small as the substitution of a single DNA building block, or nucleotide base, with another nucleotide base....
Definition of mutation - NCI Dictionary of Genetics Terms
A change in the usual DNA sequence at a particular gene locus. Although the term often has a negative connotation, mutations (including polymorphisms) can be harmful, beneficial, or neutral in their effect on cell function.