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pool in Biological Definition

Gene pool

... The gene pool of a species or a population is the complete ... of that species or population. A large gene pool indicates a large genetic diversity , which is ... genetics For the guitarist named Gene pool , see Greg Flesch . ...

Evolution

... "evolution" means a change in the frequency of an allele within a gene pool . This change may be caused by a number of different mechanisms: natural ... survive and reproduce increase the frequency of their genes in the gene pool over those that do not survive. Sexual selection occurs when ...

Molecular evolution

... less favorable (or deleterious ) mutations are removed from the gene pool by natural selection , while more favorable (or beneficial ) ones tend ... way, the alleles that these surviving individuals contribute to the gene pool will increase the frequency of those alleles. The production and ...

Sociobiology

... concept in sociobiology is that temperamental traits within a gene pool and between gene pools exist in an ecological balance. Just as an ... of a wolf population, an expansion of altruistic traits within a gene pool may also encourage the expansion of individuals with dependent traits. ...

Allele frequency

... population genetics that is used in characterizing the genetic diversity of a species population , or equivalently the richness of its gene pool . Allele frequency is defined as follows: Given a) a particular chromosome locus , b) a gene occupying that locus, c) a population of ...

Artificial life

... and "tail" boxcar could use the simple rules of the system to consistently create new "organisms" identical to itself, so long as there was a random pool of new boxcars to draw from. Edward F. Moore proposed "Artificial Living Plants", which would be floating factories which could create copies of ...

Biology

... have common descent if they have a common ancestor . All existing organisms on Earth are descended from a common ancestor or ancestral gene pool . This "last universal common ancestor, that is, the most recent common ancestor of all organisms, is believed to have appeared about 3.5 billion ...

Eugenics

... House Committee on Immigration and Naturalization in 1920 ) presented arguments that these were inferior races who would pollute the national gene pool if their numbers went unrestricted. It is argued that this stirred both Canada and the United States into passing laws creating a hierarchy of ...

Extinction

... sometimes possible for a deleterious mutation to be spread throughout a population through the effect of genetic drift . A diverse or "deep" gene pool gives a population a higher chance of surviving an adverse change in conditions. Effects that cause or reward a loss in genetic diversity can ...

Human Genome Project

... the biotech sector, into a precipitous decline. The competition between the rivals proved to be very good for the Project, and they agreed to pool their data. On April 14 , 2003 , a joint press release announced that the project had been successfully completed, with 99% of the genome ...

Long-term potentiation

... originally observed, is required for spatial learning.) Both groups were then subjected to the Morris water maze , in which rats were placed into a pool of murky water and tested on how quickly they could locate a platform hidden beneath the water's surface. Rats in the control group were able to ...

Marine biology

... are quite a number of subfields in marine biology, mostly involving specializations in particular species and biomes, such as reef habitats, tide pool ecology, and geothermal/hydrothermal vents. There are also subfields reserved for studying the physical effects of continual immersion in sea ...
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