Search results
Results from the WOW.Com Content Network
Gene flow is the transfer of alleles from one population to another population through immigration of individuals. In population genetics, gene flow (also known as migration and allele flow) is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent ...
Genetic pollution is a term for uncontrolled [1] [2] gene flow into wild populations. It is defined as "the dispersal of contaminated altered genes from genetically engineered organisms to natural organisms, esp. by cross-pollination", [3] but has come to be used in some broader ways.
Gene flow is hindered by mountain ranges, oceans and deserts or even human-made structures such as the Great Wall of China, which has hindered the flow of plant genes. [51] Gene flow is the exchange of genes between populations or species, breaking down the structure. Examples of gene flow within a species include the migration and then ...
Gene flow between two populations reduces the average genetic distance between the populations, only totally isolated human populations experience no gene flow and most populations have continuous gene flow with other neighboring populations which create the clinal distribution observed for most genetic variation.
Too much gene flow may lead to genetic swamping through extensive hybridization. [2] Genetic rescue can occur through multiple pathways, including heterosis and adaptive evolution. [2] It is closely related to, but distinctly different from the concepts of genetic pollution, evolutionary rescue, genetic restoration, and assisted gene flow. [2]
gene flow The transfer of genetic variation from one population to another, by any available means, e.g. by sexual reproduction, horizontal gene transfer, or retroviral integration. Gene flow is the transfer of alleles from one population to another population through the interbreeding of individual organisms belonging to the populations. gene pool
Human biology is an interdisciplinary area of academic study that examines humans through the influences and interplay of many diverse fields such as genetics, evolution, physiology, anatomy, epidemiology, anthropology, ecology, nutrition, population genetics, and sociocultural influences.
Other causes include gene flow from migrations, population bottlenecks and expansions, founder effects, evolutionary pressure, random chance, and (in humans) cultural factors. Even in lieu of these factors, individuals tend to stay close to where they were born, which means that alleles will not be distributed at random with respect to the full ...