Web of Stories - Life Stories of Remarkable People 3,339 views any of the present-forth descendants of a plant, animal, or person. Psychology Definition of OFFSPRING: noun. A robust definition for the conditions under which Fisherian runaway occurs was one of the most influential results of Lande's (1981) original sexual selection model. Sexual selection for traits which do not contribute to survival or which are detrimental to it, but which nevertheless increase the reproductive success of animals possessing them, so that there is positive feedback for their maintenance and augmentation over the generations; more fully "runaway sexual selection".
Runaway selection: Imagine a bird population in which females choose mates at random. noun Biology .
Darwin correctly realized that sexual selection could be mediated by male–male combat or by a female's choice of attractive males.His original definition of sexual selection, which appeared in The Origin of Species, appears to emphasize male–male combat [i.e., “a struggle between the males for possession of the … Natural selection is the differential survival and reproduction of individuals due to differences in phenotype.It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. Sexual selection in humans concerns the concept of sexual selection, introduced by Charles Darwin as an element of his theory of natural selection, as it affects humans.Sexual selection is a biological way one sex chooses a mate for the best reproductive success. Definition from Wiktionary, the free dictionary. The genetic coupling of the trait and the preference leads to self-reinforcing loops of … Jump to navigation Jump to search. In his model, populations evolve toward a line of equilibrium in the case of a stable equilibrium, or exponentially away from the line in the case of an unstable equilibrium. John Maynard Smith - Amotz Zahavi's handicap principle (51/102) - Duration: 2:57. Runaway selection is a mechanism whereby a secondary sexual trait expressed in one sex becomes genetically correlated with a preference for the trait in the other sex. Dr. Kelly BIOL 3040. The quandary of female choice: This leads to an interesting question: how did female choice for traits like a long, colorful tail evolve? Coevolution, the process of reciprocal evolutionary change that occurs between pairs of species or among groups of species as they interact with one another. In nature, this can sometimes happen because of a shock to the ecosystem. Synonym of Fisherian runaway
Runaway selection hypothesis, in biology, an explanation first proposed by English statistician R.A. Fisher in the 1930s to account for the rapid evolution of specific physical traits in male animals of certain species. Intersexual Selection: Members of the competitive sex show off for mates and the opposite sex chooses the best display.
Each species in the interaction applies selection pressure on the others. Fisherian runaway is a model of sexual selection, first proposed by R.A. Fisher in 1915, [1] and expanded upon in his 1930 book The Genetical Theory of Natural Selection, [2] that suggests an explanation for sexual selection of traits that do not obviously increase fitness of survival, based upon a positive feedback "runaway" mechanism. runaway selection (uncountable) .
English [] Noun [].
Males with slightly longer tails fly a little more adeptly, avoid predation, and so, survive better than males with slightly shorter tails. The Mechanisms of Sexual Selection and the First Major Triumph. The concept of runaway sexual selection illustrates one of the ways that sexual selection is hypothesized to work. Laura M. Travers, Runaway Selection, Encyclopedia of Animal Cognition and Behavior, 10.1007/978-3-319-47829-6, (1-6), (2017). Charles Darwin popularised the term "natural selection", contrasting it with artificial selection, which in his view is intentional, whereas natural selection is not. Definition of runaway selection in English: runaway selection. Runaway effects are curbed to the extent that other criteria for selection counterbalance the fixations that led to them.
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