type founder - ορισμός. Τι είναι το type founder
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Τι (ποιος) είναι type founder - ορισμός

LOSS OF GENETIC VARIATION THAT OCCURS WHEN A NEW POPULATION IS ESTABLISHED BY A VERY SMALL NUMBER OF INDIVIDUALS
Founder's effect; Founder population; Founding population; Effective founder population; Founder event; Founder principle; Founder mutation; Founder effects; The founder effect; Serial founder effect; Serial founder effects; Founders effect; Founder Effect; The Founder Effect
  • Founder effect: The original population (left) could give rise to different founder populations (right).
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type founder      
¦ noun Printing a designer and maker of type.
Derivatives
type foundry noun
Organizational founder         
  • [[Jimmy Wales]], co-founder of [[Wikipedia]]
PERSON WHO CREATES AN INSTITUTION INTENDED TO PERPETUATE ITSELF AFTER THE FOUNDER'S ASSOCIATION ENDS
Co-founder; Forgotten founder; Founder's dilemma; Cofounder; Founder emeritus; Emeritus founder; Organizational Founder
An organizational founder is a person who has undertaken some or all of the formational work needed to create a new organization, whether it is a business, a charitable organization, a governing body, a school, a group of entertainers, or any other type of organization. If there are multiple founders, each can be referred to as a co-founder.
P22 (type foundry)         
P22 Type Foundry; P22 type foundry; P22 Type Foundry)
P22 Type Foundry is a digital type foundry and letterpress printing studio based in Rochester, New York. The company was created in 1994 in Buffalo, New York by co-founders Richard Kegler and Carima El-Behairy.

Βικιπαίδεια

Founder effect

In population genetics, the founder effect is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population. It was first fully outlined by Ernst Mayr in 1942, using existing theoretical work by those such as Sewall Wright. As a result of the loss of genetic variation, the new population may be distinctively different, both genotypically and phenotypically, from the parent population from which it is derived. In extreme cases, the founder effect is thought to lead to the speciation and subsequent evolution of new species.

In the figure shown, the original population has nearly equal numbers of blue and red individuals. The three smaller founder populations show that one or the other color may predominate (founder effect), due to random sampling of the original population. A population bottleneck may also cause a founder effect, though it is not strictly a new population.

The founder effect occurs when a small group of migrants—not genetically representative of the population from which they came—establish in a new area. In addition to founder effects, the new population is often very small, so it shows increased sensitivity to genetic drift, an increase in inbreeding, and relatively low genetic variation.