Definition, Betydelse & Synonymer | Engelska ordet MUTATION

Definition av MUTATION

1. mutation

Exempel på hur man kan använda MUTATION i en mening

• A positive test indicates that the chemical is mutagenic and therefore may act as a carcinogen, because cancer is often linked to mutation.
• The operations are: selection of the fittest programs for reproduction (crossover), replication and/or mutation according to a predefined fitness measure, usually proficiency at the desired task.
• It can be caused by a mutation in a single gene (monogenic) or multiple genes (polygenic) or by a chromosome abnormality.
• This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift.
• In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA.
• A quasispecies is a large group or "cloud" of related genotypes that exist in an environment of high mutation rate (at stationary state), where a large fraction of offspring are expected to contain one or more mutations relative to the parent.
• 5α-Reductase 2 deficiency (5αR2D) is an autosomal recessive condition caused by a mutation in SRD5A2, a gene encoding the enzyme 5α-reductase type 2 (5αR2).
• She is known for the discovery with Ian Holt and John Morgan-Hughes of the "first identification of a mitochondrial DNA mutation in human disease and the concept of tissue heteroplasmy of mutant mitochondrial DNA", published in Nature in 1986.
• Genetic algorithms are commonly used to generate high-quality solutions to optimization and search problems via biologically inspired operators such as selection, crossover, and mutation.
• MFS is caused by a mutation in FBN1, one of the genes that make fibrillin, which results in abnormal connective tissue.
• The term also refers to the mechanism of changes: functionally relevant alterations to the genome that do not involve mutation of the nucleotide sequence.
• Transition (genetics), a point mutation that changes a purine nucleotide to another purine (A ↔ G) or a pyrimidine nucleotide to another pyrimidine (C ↔ T).
• Tay–Sachs disease is caused by a genetic mutation in the HEXA gene on chromosome 15, which codes a subunit of the hexosaminidase enzyme known as hexosaminidase A.
• Hairlessness in cats is a naturally occurring genetic mutation, and the Sphynx was developed through selective breeding of these animals, starting in the 1960s.
• This state of having two different variants of the same gene on each chromosome is originally caused by a mutation in one of the genes, either new (de novo) or inherited.
• The color pattern of the Appaloosa is of interest to those who study equine coat color genetics, as it and several other physical characteristics are linked to the leopard complex mutation (LP).
• Most types of porphyria are inherited from one or both of a person's parents and are due to a mutation in one of the genes that make heme.
• He acknowledges that such a long life span should not be expected as a result of a mere three generations of selective breeding, but offers no alternative explanation except by having a character declare: "A mutation, of course — which simply says that we don't know".
• Sweet corn is the result of a naturally occurring recessive mutation in the genes which control conversion of sugar to starch inside the endosperm of the corn kernel.
• Ledyard Stebbins in 1966, and Theodosius Dobzhansky in 1974 offering differing basic postulates, though they all include natural selection, working on heritable variation supplied by mutation.

Förberedelsen av sidan tog: 258,90 ms.