Phenotypic diversity as an adaptation to environmental uncertainty
... Mendelian trait in a later paper (Levins, 1964). He also suggested that long-term selection in a fluctuating environment might act on the genetic architecture to reduce the short-term effects of selection, thus maintaining some amount of genetic variation (Levins, 1965, 1968). Further work on the ma ...
... Mendelian trait in a later paper (Levins, 1964). He also suggested that long-term selection in a fluctuating environment might act on the genetic architecture to reduce the short-term effects of selection, thus maintaining some amount of genetic variation (Levins, 1965, 1968). Further work on the ma ...
Escherichia coli rpoB Mutants Have Increased
... quantitative expectations for how a mutation with a given deleterious fitness effect should influence evolvability, and they will thus inform future studies of how deleterious, neutral, and beneficial mutations targeting other cellular processes impact the evolutionary potential of microorganisms. K ...
... quantitative expectations for how a mutation with a given deleterious fitness effect should influence evolvability, and they will thus inform future studies of how deleterious, neutral, and beneficial mutations targeting other cellular processes impact the evolutionary potential of microorganisms. K ...
What is individual quality? An evolutionary
... negative relationships are respectively denoted + and . ...
... negative relationships are respectively denoted + and . ...
recommended breeding policy for the burmese
... mutations have occurred and selective breeding has been used to isolate these to produce the various pedigree breeds we see today. In the case of the Burmese a key specific gene mutation (cb) became the basis of the breed. The key gene mutations influencing the appearance of the Burmese are: Agouti ...
... mutations have occurred and selective breeding has been used to isolate these to produce the various pedigree breeds we see today. In the case of the Burmese a key specific gene mutation (cb) became the basis of the breed. The key gene mutations influencing the appearance of the Burmese are: Agouti ...
nosil vines funk 2005 evolution
... sarily the case. To understand why, imagine the following scenario: two populations mate over the same time period, migrate to and mate within each others’ habitats as readily as their own, and accept mates from each population with equal frequency. Guided by the traditional classification, one woul ...
... sarily the case. To understand why, imagine the following scenario: two populations mate over the same time period, migrate to and mate within each others’ habitats as readily as their own, and accept mates from each population with equal frequency. Guided by the traditional classification, one woul ...
A quantitative genetic competition model for
... The intensity of competition between individuals is influenced by a quantitative character whose value is determined additively by alleles from many loci. With assortative mating based on this character, frequency- and density-dependent competition can subdivide a population with an initially unimod ...
... The intensity of competition between individuals is influenced by a quantitative character whose value is determined additively by alleles from many loci. With assortative mating based on this character, frequency- and density-dependent competition can subdivide a population with an initially unimod ...
Towards a genodynamics of hybrid zones
... bibroni were very similar in many respects. Morphological variation in two of these areas is summarized in Figures 9.2 and 9.3. The hybrid zone is generally less than 9 km wide, and over 80% of the morphological change OCCUrsin the central 3 km. The diversity of hybrid phenotypes suggests that matin ...
... bibroni were very similar in many respects. Morphological variation in two of these areas is summarized in Figures 9.2 and 9.3. The hybrid zone is generally less than 9 km wide, and over 80% of the morphological change OCCUrsin the central 3 km. The diversity of hybrid phenotypes suggests that matin ...
Sympatric speciation: when is it possible
... Assume that all the individuals are able to utilize both resources, but small size gives an advantage in a competition for one of them while large size is advantageous in a competition for the other. Then in a population of small individuals the intermediates as well as the large ones will have an a ...
... Assume that all the individuals are able to utilize both resources, but small size gives an advantage in a competition for one of them while large size is advantageous in a competition for the other. Then in a population of small individuals the intermediates as well as the large ones will have an a ...
Recombination and epistasis facilitate introgressive hybridization
... two types of hazard to the endemic species. One is hybrid sterility, which inhibits normal reproduction, and the other is introgressive hybridization, which does not completely retard mating and reproduction by hybridization but instead allows exotic species or local varieties to genetically admix w ...
... two types of hazard to the endemic species. One is hybrid sterility, which inhibits normal reproduction, and the other is introgressive hybridization, which does not completely retard mating and reproduction by hybridization but instead allows exotic species or local varieties to genetically admix w ...
Adaptive speciation: the role of natural selection in mechanisms of
... natural selection drives the evolution of reproductive isolation in both cases.10 Controversies about adaptive speciation are traditionally discussed in the context of geography.11 Advocates of the spandrel approach argue that geographic speciation is the most common mode of speciation.12 Advocates ...
... natural selection drives the evolution of reproductive isolation in both cases.10 Controversies about adaptive speciation are traditionally discussed in the context of geography.11 Advocates of the spandrel approach argue that geographic speciation is the most common mode of speciation.12 Advocates ...
GENETIC MODELS FOR DEVELOPMENTAL HOMEOSTASIS
... in overdominance (i.e., the heterozygote may be more fit then either homozygote because of the greater biochemical versatility of having the products of two alleles rather than the products of the same allele). In the key 1950 paper Dobzhansky concluded that inversion heterozygotes which carry two c ...
... in overdominance (i.e., the heterozygote may be more fit then either homozygote because of the greater biochemical versatility of having the products of two alleles rather than the products of the same allele). In the key 1950 paper Dobzhansky concluded that inversion heterozygotes which carry two c ...
Specious Speciation: Response to Talk Origins Speciation FAQ
... mechanism for animal diversification. Animal hybrids are typically unisexual, where part of the genome is not heritable. For example, in female fish hybrid clones, the parent species is always required to provide the male portion of the genome, meaning a truly new independent species is not formed. ...
... mechanism for animal diversification. Animal hybrids are typically unisexual, where part of the genome is not heritable. For example, in female fish hybrid clones, the parent species is always required to provide the male portion of the genome, meaning a truly new independent species is not formed. ...
Multiple paternity and sporophytic inbreeding depression in
... However, the effect of polyandry on female and male fitness, gene flow, and the evolution of reproductive structures in flowering plants have started to receive attention only in the past few years (Bernasconi, 2003; Teixeira and Bernasconi, 2007; Teixeira et al., 2009). In flowering plants, polyand ...
... However, the effect of polyandry on female and male fitness, gene flow, and the evolution of reproductive structures in flowering plants have started to receive attention only in the past few years (Bernasconi, 2003; Teixeira and Bernasconi, 2007; Teixeira et al., 2009). In flowering plants, polyand ...
Potential of promotion of alleles by genome editing for improving
... – Used genome editing to make a single base deletion in the gene that controls susceptibility to ASF ...
... – Used genome editing to make a single base deletion in the gene that controls susceptibility to ASF ...
Speciation and Gene Flow between Snails of Opposite Chirality
... and whether single-gene speciation can occur, we developed a mathematical model that is relevant to any maternaleffect gene. The model shows that reproductive character displacement can promote the evolution of new chiral morphs, tending to counteract the positive frequency-dependent selection that ...
... and whether single-gene speciation can occur, we developed a mathematical model that is relevant to any maternaleffect gene. The model shows that reproductive character displacement can promote the evolution of new chiral morphs, tending to counteract the positive frequency-dependent selection that ...
2n gametes in the potato: essential ingredients for breeding and
... However, in some cases genotypes which exhibited parallel spindles at metaphase II did not produce 2n pollen (Ramanna 1979; Masuelli et al. 1992; Barone et al. 1997). We found a discrepancy between spindle anomalies and 2n pollen formation in diploid, triploid and pentaploid hybrids with different g ...
... However, in some cases genotypes which exhibited parallel spindles at metaphase II did not produce 2n pollen (Ramanna 1979; Masuelli et al. 1992; Barone et al. 1997). We found a discrepancy between spindle anomalies and 2n pollen formation in diploid, triploid and pentaploid hybrids with different g ...
A Computational Model of Symbiotic Composition in
... arguably, to the extent that a gene, or a section of chromosome, can be duplicated, or be propagated through reproductive events, without the whole chromosome being reproduced, these mechanisms do involve a unit of selection smaller than the individual (Dawkins 1976). If we accept a two-level model ...
... arguably, to the extent that a gene, or a section of chromosome, can be duplicated, or be propagated through reproductive events, without the whole chromosome being reproduced, these mechanisms do involve a unit of selection smaller than the individual (Dawkins 1976). If we accept a two-level model ...
Stewart_Kathryn_A_201302_PhD - QSpace
... I assessed levels of post-zygotic isolation between the Eastern and Interior lineages using a laboratory hybridization experiment. Hybrid tadpoles showed equal to or greater fitness than ii ...
... I assessed levels of post-zygotic isolation between the Eastern and Interior lineages using a laboratory hybridization experiment. Hybrid tadpoles showed equal to or greater fitness than ii ...
30 years of breeding foreign white cats
... The blue-eyed whites that result of such a mating might well be Oriental shorthairs under their white coats and have white-blue eyes, instead of being Foreign Whites with double Siamese underlying pattern. Sometimes the difference is very difficult to see, but most Oriental white’s have a coloured p ...
... The blue-eyed whites that result of such a mating might well be Oriental shorthairs under their white coats and have white-blue eyes, instead of being Foreign Whites with double Siamese underlying pattern. Sometimes the difference is very difficult to see, but most Oriental white’s have a coloured p ...
Negligible senescence in the longest living rodent, the
... suggests that animals either partition more energy to somatic maintenance, or partition more energy into reproductive processes. They therefore have greater reproductive output over a shorter period and because their tissues are not adequately maintained, die young. On the other hand, those animals ...
... suggests that animals either partition more energy to somatic maintenance, or partition more energy into reproductive processes. They therefore have greater reproductive output over a shorter period and because their tissues are not adequately maintained, die young. On the other hand, those animals ...
Fitness “kinematics”: biological function, altruism, and organism
... I’ll argue that any member of a broad class of plausible accounts of static fitness will allow us to define a notion of static conditional fitness. Such conditional fitnesses will include fitnesses conditional on the occurrence of an event of a particular type. Though these fitnesses do not change d ...
... I’ll argue that any member of a broad class of plausible accounts of static fitness will allow us to define a notion of static conditional fitness. Such conditional fitnesses will include fitnesses conditional on the occurrence of an event of a particular type. Though these fitnesses do not change d ...
- Wiley Online Library
... the ecological phenotype, but because mating is by female choice they do not express mate preference or choosiness phenotypes. The ecological phenotype, z, determines the resources that an individual can exploit. Examples of ecological phenotypes in nature include habitat preference (which determine ...
... the ecological phenotype, but because mating is by female choice they do not express mate preference or choosiness phenotypes. The ecological phenotype, z, determines the resources that an individual can exploit. Examples of ecological phenotypes in nature include habitat preference (which determine ...
The evolution of mutation rate in sexual populations during
... can adapt sufficiently fast to novel local conditions. Iterated founder effects during range expansion, however, cause low levels of local genetic diversity at these range margins. Mutation rates can evolve, too, under conditions that favor an increased rate of local adaptation, but this has thus fa ...
... can adapt sufficiently fast to novel local conditions. Iterated founder effects during range expansion, however, cause low levels of local genetic diversity at these range margins. Mutation rates can evolve, too, under conditions that favor an increased rate of local adaptation, but this has thus fa ...
Title Changes in the Concept of "Fitness" in Evolutionary Biology
... inclusive fitness, namely, so as to encourage other scientists to use their work. For example, scientists give credit to other scientists in their own work because this increases the credibility of the work. This will in turn increase the possibility that the work is cited by other scientists (Hull ...
... inclusive fitness, namely, so as to encourage other scientists to use their work. For example, scientists give credit to other scientists in their own work because this increases the credibility of the work. This will in turn increase the possibility that the work is cited by other scientists (Hull ...
The effect of inbreeding rate on fitness, inbreeding depression and
... due to multilocus interactions should develop slowly in the beginning, but at accelerated speed as populations become increasingly differentiated (Orr and Turelli 2001). Consistent with the expectation, many empirical studies have found an intermediate optimum or a negative relationship between pare ...
... due to multilocus interactions should develop slowly in the beginning, but at accelerated speed as populations become increasingly differentiated (Orr and Turelli 2001). Consistent with the expectation, many empirical studies have found an intermediate optimum or a negative relationship between pare ...