disruptive selection

Sorry remind us what you mean by disruptive selection again.

Third, a fitness minimum where disruptive selection will occur and the population branch into two morphs.

Consider now the case of disruptive selection.

Stabilizing selection is the opposite of disruptive selection.

Yeah, yeah question so, so we're, we're saying that the difference between male and female roles in this disruptive selection.

Geritz 1998 presents a compelling argument that disruptive selection only occurs near fitness minima.

The most popular, which invokes the disruptive selection model, was first put forward by John Maynard Smith in 1966.

It is the selection against the mean of a population distribution, causing disruptive selection and divergent genotypes.

Secondly, disruptive selection is selection for extreme trait values and often results in two different values becoming most common, with selection against the average value.

Disruptive selection is the hypothesis that two subpopulations of a species live in different environments that select for different allele at a particular locus.

However, a meta-analysis of studies that measured selection in the wild found that stabilizing selection and disruptive selection were equally common.

Disruptive selection: A third possibility is that the organisms with traits at the extremes of the population distribution actually have a reproductive advantage over those nearer the mean.

Disruptive selection, also called diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values.

These include sexual selection, ecological selection, stabilizing selection, disruptive selection and directional selection (more on these below).

While it is true that disruptive selection can lead to speciation, this is not as quick or straightforward of a process as other types of speciation or evolutionary change.

This is largely because the results of disruptive selection are less stable than the results of directional selection (directional selection favours individuals at only one end of the spectrum).

Genic capture was proposed as a simpler alternative to another theory explaining the lek paradox that proposed that sexual selection creates disruptive selection, i.e. positive selection for genetic variance.

They conjectured that disruptive selection produced by variation in the environment could result in an evolutionary transition from ESD to GSD (Bull, Vogt, and Bulmer, 1982).

Disruptive selection is of particular significance in the history of evolutionary study, as it is involved in one of evolution's "cardinal cases", namely the finch populations observed by Darwin in the Galápagos.

Distinct from patterns of selection are mechanisms of selection; for example, disruptive selection often is the result of disassortative sexual selection, and balancing selection may result from frequency-dependent selection and overdominance.

It suggests that, within the pasture, strains of white clover have been selected by competitive interaction with associated grasses and that different species of grass contribute to the diversifying or disruptive selection operating upon the population of white clover.

Both theories assume that anisogamy originated through disruptive selection acting on an ancestral isogamous population, and that there is a trade-off between larger gamete number and smaller fitness of each gamete, because the total resource one individual can invest in reproduction is fixed.

Stabilizing selection favors individuals with intermediate characteristics while its opposite, disruptive selection, favors those with extreme characteristics; directional selection occurs when characteristics lie along a phenotypic spectrum and the individuals at one end are more successful; and balancing selection is a pattern in which multiple characteristics may be favored.