Promoter (genetics) - Wikipedia

Provided by : en.wikipedia.org

FREEIn genetics, a promoter is a sequence of DNA to which proteins bind that initiate transcription of a single RNA from the DNA downstream of it. This RNA may encode a protein, or can have a function in and of itself, such as tRNA, mRNA, or rRNA.Promoters are located near the transcription start sites of genes, upstream on the DNA (towards the 5' region of the sense strand). ...Show details

Created: 1 month ago

Evolutionary population genetics of promoters: Predicting

Provided by : ncbi.nlm.nih.gov

FREERegulatory interactions between genes are believed to provide an important mode of evolution, which accounts for a substantial part of the differentiation between species ().This is reflected by the sequence variability of regulatory DNA: there is ample case evidence of compensatory evolution at conserved function but also of rapid functional changes even between closely related species (). ...Show details

Created: 3 years ago

Gene Switch - HHMI BioInteractive

Provided by : biointeractive.org

FREEGene Switch Overview Background. Each gene has a promoter region near its upstream end. When a gene is transcribed into messenger RNA, the promoter region binds special proteins called transcription factors. These proteins recruit RNA polymerase, in a complex with proteins, to bind to the gene and create messenger RNA from the gene. ...Show details

Created: 1 month ago

Genetic Variation Definition, Causes, and Examples

Provided by : thoughtco.com

FREEGenetic variation is important to the processes of natural selection and biological evolution. The genetic variations that arise in a population happen by chance, but the process of natural selection does not. Natural selection is the result of the interactions between genetic variations in a population and the environment. The environment ...Show details

Created: 1 month ago

Life History Evolution | Learn Science at Scitable

Provided by : nature.com

FREEThe evolution of life history traits by natural selection depends upon genetic variation on which selection can act to produce adaptations in response to the environment. ...Show details

Created: 1 month ago

Genome evolution - Wikipedia

Provided by : en.wikipedia.org

FREEGenome evolution is the process by which a genome changes in structure (sequence) or size over time. The study of genome evolution involves multiple fields such as structural analysis of the genome, the study of genomic parasites, gene and ancient genome duplications, polyploidy, and comparative genomics.Genome evolution is a constantly changing and evolving field due to the steadily growing ...Show details

Created: 1 month ago

Evolution

Provided by : sciencedaily.com

FREEIn biology, evolution is the change in the inherited traits of a population from generation to generation. These traits are the expression of genes that are copied and passed on to offspring ...Show details

Created: 1 month ago

variation | Definition, Examples, & Facts | Britannica

Provided by : britannica.com

FREEevolution: Genetic variation in populations The gene pool is the sum total of all the genes and combinations of genes that occur in a population of organisms of the same species. It can be described by citing the frequencies of the alternative genetic constitutions.… ...Show details

Created: 1 month ago

The other green (r)evolution

Provided by : evolution.berkeley.edu

FREEIn genetics, this situation is called a bottleneck and it causes a large reduction in genetic variation for the incipient crop (as shown in scenario A below). Because of this bottleneck, all the genes in the crop population, will tend to have less genetic variation that their counterparts in the wild population. ...Show details

Created: 1 month ago

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