- Wiley Online Library
... Recent genetic investigations provide empirical support for the theoretical argument that rearrangements facilitate speciation when gene flow links populations under divergent ecological selection. Loci involved in reproductive isolation map to inversions in sympatric species of Drosophila (Noor et ...
... Recent genetic investigations provide empirical support for the theoretical argument that rearrangements facilitate speciation when gene flow links populations under divergent ecological selection. Loci involved in reproductive isolation map to inversions in sympatric species of Drosophila (Noor et ...
Fishman et al. 2013 - College of Humanities and Sciences
... Recent genetic investigations provide empirical support for the theoretical argument that rearrangements facilitate speciation when gene flow links populations under divergent ecological selection. Loci involved in reproductive isolation map to inversions in sympatric species of Drosophila (Noor et ...
... Recent genetic investigations provide empirical support for the theoretical argument that rearrangements facilitate speciation when gene flow links populations under divergent ecological selection. Loci involved in reproductive isolation map to inversions in sympatric species of Drosophila (Noor et ...
www.esf.org - European Science Foundation
... approach will be required, combining empirical insight with theoretical advances and bringing together developments in ecology, systematics, and genetics. On this basis, methods for interpreting and classifying the early phases of speciation need to be developed and, for each of the alternative spec ...
... approach will be required, combining empirical insight with theoretical advances and bringing together developments in ecology, systematics, and genetics. On this basis, methods for interpreting and classifying the early phases of speciation need to be developed and, for each of the alternative spec ...
Fast identification and statistical evaluation
... Fine mapping the B locus • Analysis of linkage to B in aaBb x aabb • 2900 plants screened with markers from all over genome • Only 4 recombinants with MgSTS28 – If region is typical, this implies ~30 kb distance 0.14 cM B ...
... Fine mapping the B locus • Analysis of linkage to B in aaBb x aabb • 2900 plants screened with markers from all over genome • Only 4 recombinants with MgSTS28 – If region is typical, this implies ~30 kb distance 0.14 cM B ...
What can hybrid zones tell us about speciation?
... To understand speciation we need to study the genetics and ecology of intermediate cases where interspecific hybridization still occurs. Two closely related species of Heliconius butterflies meet this criterion: Heliconius himera is endemic to dry forest and thorn scrub in southern Ecuador and north ...
... To understand speciation we need to study the genetics and ecology of intermediate cases where interspecific hybridization still occurs. Two closely related species of Heliconius butterflies meet this criterion: Heliconius himera is endemic to dry forest and thorn scrub in southern Ecuador and north ...
Document
... influence a rare interacting population much more strongly than an abundant population, and its consequences may depend on whether populations are growing or contracting, local or invasive (Currat et al., 2008). In all cases, the pattern of contemporary hybridization is potentially only a single sna ...
... influence a rare interacting population much more strongly than an abundant population, and its consequences may depend on whether populations are growing or contracting, local or invasive (Currat et al., 2008). In all cases, the pattern of contemporary hybridization is potentially only a single sna ...
The evolution of non-ecological reproductive barriers
... events (reviewed by Smadja & Butlin, 2011). Among those mechanisms are sexual and natural selection (Kirkpatrick & Ravigné, 2002) associated with reinforcement (Servedio & Noor, 2003). ...
... events (reviewed by Smadja & Butlin, 2011). Among those mechanisms are sexual and natural selection (Kirkpatrick & Ravigné, 2002) associated with reinforcement (Servedio & Noor, 2003). ...
Hybridization and speciation
... influence a rare interacting population much more strongly than an abundant population, and its consequences may depend on whether populations are growing or contracting, local or invasive (Currat et al., 2008). In all cases, the pattern of contemporary hybridization is potentially only a single sna ...
... influence a rare interacting population much more strongly than an abundant population, and its consequences may depend on whether populations are growing or contracting, local or invasive (Currat et al., 2008). In all cases, the pattern of contemporary hybridization is potentially only a single sna ...
Sympatric Speciation
... Sympatric speciation by disruptive selection Most sympatric speciation models rely on disruptive selection: Individuals sort by phenotype (morph) into different microhabitats or on different resources. • Intermediate phenotypes are not well-adapted and selected against. • Natural selection increases ...
... Sympatric speciation by disruptive selection Most sympatric speciation models rely on disruptive selection: Individuals sort by phenotype (morph) into different microhabitats or on different resources. • Intermediate phenotypes are not well-adapted and selected against. • Natural selection increases ...
- Wiley Online Library
... and the intricacies of species interactions. Furthermore, the process does not always result in the pattern of divergence. For example, if the two species are entirely sympatric, increased RI will be favored across the entire range. ...
... and the intricacies of species interactions. Furthermore, the process does not always result in the pattern of divergence. For example, if the two species are entirely sympatric, increased RI will be favored across the entire range. ...
Genome size and intron size in Drosophila
... the paucity of pseudogenes in Drosophila is the product of rampant deletion of DNA in regions not subjected to selective constraints, and they further extrapolated that different deletion rates may contribute to the divergence in genome size among taxa. Their assumption is that such a high rate of d ...
... the paucity of pseudogenes in Drosophila is the product of rampant deletion of DNA in regions not subjected to selective constraints, and they further extrapolated that different deletion rates may contribute to the divergence in genome size among taxa. Their assumption is that such a high rate of d ...
Speciation and Intra-Specific Taxa
... for the radiation of several plant genera of this region. 3. Ecological considerations Mayr has remarked that “there is no geographic speciation that is not at the same time ecological speciation and genetic speciation”. Ecological shifts and ecological selection typically accompany geographical iso ...
... for the radiation of several plant genera of this region. 3. Ecological considerations Mayr has remarked that “there is no geographic speciation that is not at the same time ecological speciation and genetic speciation”. Ecological shifts and ecological selection typically accompany geographical iso ...
genetics and the fitness of hybrids
... that often results from intercrossing genetically divergent populations or taxa, has long been taken as evidence of unfavorable interactions between the genomes of the parental individuals (e.g., 39, 42, 43, 75, 80). The most widely accepted genetic model for the occurrence of such incompatibilities ...
... that often results from intercrossing genetically divergent populations or taxa, has long been taken as evidence of unfavorable interactions between the genomes of the parental individuals (e.g., 39, 42, 43, 75, 80). The most widely accepted genetic model for the occurrence of such incompatibilities ...
16Insect Evolutionary
... is that associations between mating and ecological traits are broken down by recombination. However, in mating systems that involve pleiotropic assortment traits, mating and ecological adaptation are affected by the same genes, so this argument does not apply. The applicability of sympatric speciati ...
... is that associations between mating and ecological traits are broken down by recombination. However, in mating systems that involve pleiotropic assortment traits, mating and ecological adaptation are affected by the same genes, so this argument does not apply. The applicability of sympatric speciati ...
Theory and speciation
... isolation, mechanical isolation based on male genitalia, and postmating, prezygotic isolation (such as sperm–egg incompatibility) is, in principle, straightforward. If two geographically isolated lineages diverge in male traits and female preferences, they are likely to be sexually isolated when the ...
... isolation, mechanical isolation based on male genitalia, and postmating, prezygotic isolation (such as sperm–egg incompatibility) is, in principle, straightforward. If two geographically isolated lineages diverge in male traits and female preferences, they are likely to be sexually isolated when the ...
Theory and speciation
... isolation, mechanical isolation based on male genitalia, and postmating, prezygotic isolation (such as sperm–egg incompatibility) is, in principle, straightforward. If two geographically isolated lineages diverge in male traits and female preferences, they are likely to be sexually isolated when the ...
... isolation, mechanical isolation based on male genitalia, and postmating, prezygotic isolation (such as sperm–egg incompatibility) is, in principle, straightforward. If two geographically isolated lineages diverge in male traits and female preferences, they are likely to be sexually isolated when the ...
The Ecological Genetics of Homoploid Hybrid
... more plausible (Arnold 1997; Rieseberg 1997). The role of ecological selection was explored explicitly by Buerkle et al. (2000) in a model featuring habitats for both of the parental species and a third unoccupied, ecologically divergent habitat available for colonization. This spatial model demonst ...
... more plausible (Arnold 1997; Rieseberg 1997). The role of ecological selection was explored explicitly by Buerkle et al. (2000) in a model featuring habitats for both of the parental species and a third unoccupied, ecologically divergent habitat available for colonization. This spatial model demonst ...
The genetic architecture of insect courtship behavior and
... however, mean that the same mechanisms underlie each. In fact, the majority of studies that discuss intraspecific versus interspecific differences conclude that they do not involve the same traits. For example, intraspecific differences in the interpulse intervals of Drosophila melanogaster are unde ...
... however, mean that the same mechanisms underlie each. In fact, the majority of studies that discuss intraspecific versus interspecific differences conclude that they do not involve the same traits. For example, intraspecific differences in the interpulse intervals of Drosophila melanogaster are unde ...
Reproductive isolation between two darter species is enhanced and
... and geographic races (Page, 1983). In Mendelson (2003), multiple reproductive isolating barriers and genetic distance were measured between 13 pairs of darter species, and behavioural isolation was found to have evolved faster and occasionally to completion. In contrast, post-zygotic isolating barri ...
... and geographic races (Page, 1983). In Mendelson (2003), multiple reproductive isolating barriers and genetic distance were measured between 13 pairs of darter species, and behavioural isolation was found to have evolved faster and occasionally to completion. In contrast, post-zygotic isolating barri ...
Characterization of Prdm9 in Equids and Sterility
... relatively recent divergence time, many viable but typically infertile equid hybrid combinations can be produced, not only ...
... relatively recent divergence time, many viable but typically infertile equid hybrid combinations can be produced, not only ...
Thermal adaptation and ecological speciation
... Hilbish et al. 1994; Somero 2002; Hilton et al. 2008; Ohlberger et al. 2008) but these differences may have evolved after the establishment of reproductive isolation because of other ecological or nonecological factors. While these examples show that different conspecific populations or closely rela ...
... Hilbish et al. 1994; Somero 2002; Hilton et al. 2008; Ohlberger et al. 2008) but these differences may have evolved after the establishment of reproductive isolation because of other ecological or nonecological factors. While these examples show that different conspecific populations or closely rela ...
Ecological character displacement in the face of gene flow
... Background: Ecological character displacement is a process of phenotypic differentiation of sympatric populations caused by interspecific competition. Such differentiation could facilitate speciation by enhancing reproductive isolation between incipient species, although empirical evidence for it at ...
... Background: Ecological character displacement is a process of phenotypic differentiation of sympatric populations caused by interspecific competition. Such differentiation could facilitate speciation by enhancing reproductive isolation between incipient species, although empirical evidence for it at ...
The polymorphic prelude to Bateson–Dobzhansky–Muller
... be greatest at the points closest to the contact zone, with intermediate values at points further from the cline centre, where individuals effectively experience allopatry, resulting in an inverse cline. Neutral polymorphism: genetic variants at a locus that have no fitness differences relative to e ...
... be greatest at the points closest to the contact zone, with intermediate values at points further from the cline centre, where individuals effectively experience allopatry, resulting in an inverse cline. Neutral polymorphism: genetic variants at a locus that have no fitness differences relative to e ...