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Annotated bib final
... Main Claim: There are certain markers which are indicative of asexuality as well as other deviant sexualities, suggesting that they are similar in development and impact on the individual’s life more so than asexuality is similar to a dysfunction. Subclaim 1: Our highly sexualized culture demonstrat ...
... Main Claim: There are certain markers which are indicative of asexuality as well as other deviant sexualities, suggesting that they are similar in development and impact on the individual’s life more so than asexuality is similar to a dysfunction. Subclaim 1: Our highly sexualized culture demonstrat ...
REVIEW Social modulation of androgens in male vertebrates: meta
... phases and predicted that the effect of paternal effort on testosterone would be larger during incubation than during later breeding phases, that is, feeding or brooding (Hirschenhauser et al. 2003). All observed effect size patterns were subsequently tested for differences between the modulatory va ...
... phases and predicted that the effect of paternal effort on testosterone would be larger during incubation than during later breeding phases, that is, feeding or brooding (Hirschenhauser et al. 2003). All observed effect size patterns were subsequently tested for differences between the modulatory va ...
The genetic consequences of selection in natural populations
... The selection coefficient, s, quantifies the strength of selection acting on a genetic variant. Despite this parameter’s central importance to population genetic models, until recently we have known relatively little about the value of s in natural populations. With the development of molecular gene ...
... The selection coefficient, s, quantifies the strength of selection acting on a genetic variant. Despite this parameter’s central importance to population genetic models, until recently we have known relatively little about the value of s in natural populations. With the development of molecular gene ...
Obsessive Compulsive Disorder
... Note: Based on rates of OCD symptoms in over 1000 patients seen at Butler Hospital at Brown University (Rasmussen & Eisen, 1998) ...
... Note: Based on rates of OCD symptoms in over 1000 patients seen at Butler Hospital at Brown University (Rasmussen & Eisen, 1998) ...
Adaptation in a spider mite population after long
... effects of the selection regime against this factor. Because individual data were collected for these three traits, we could also test for differences among replicate populations within each selection regime. For developmental time, gender was included as an additional factor, as well as its interac ...
... effects of the selection regime against this factor. Because individual data were collected for these three traits, we could also test for differences among replicate populations within each selection regime. For developmental time, gender was included as an additional factor, as well as its interac ...
mab-3 is required for male development and behavior
... differentiation of sex-specific sense organs (Baker and Ridge, 1980; Shen and Hodgkin, 1988). The male-specific isoform of DSX can substitute for MAB-3 in the C. elegans male peripheral nervous system, indicating that the two proteins are functionally very similar (Raymond et al., 1998). dsx appears ...
... differentiation of sex-specific sense organs (Baker and Ridge, 1980; Shen and Hodgkin, 1988). The male-specific isoform of DSX can substitute for MAB-3 in the C. elegans male peripheral nervous system, indicating that the two proteins are functionally very similar (Raymond et al., 1998). dsx appears ...
Evolution-Fitness and Rocks
... survive in a given environment l Of the excess products of organisms reproductive capacity the most fit survive - Survival of the fittest ©2000 Timothy G. Standish ...
... survive in a given environment l Of the excess products of organisms reproductive capacity the most fit survive - Survival of the fittest ©2000 Timothy G. Standish ...
Sexual dimorphism of cranial suture complexity in wild sheep (Ovis
... growth or mechanical loading) best predicted sutural complexity for each sex, the complexity of each cranial suture was regressed independently for males and females against the log-transformed values for age and the five cranial variables. All-possible-subsets regressions (program BMDP9R) were perf ...
... growth or mechanical loading) best predicted sutural complexity for each sex, the complexity of each cranial suture was regressed independently for males and females against the log-transformed values for age and the five cranial variables. All-possible-subsets regressions (program BMDP9R) were perf ...
Section 1 The Theory of Evolution by Natural Selection
... Evolution by Natural Selection Darwin realized that Malthus’s hypotheses about human populations apply to all species. Every organism has the potential to produce many offspring during its lifetime. In most cases, however, only a limited number of those offspring survive to reproduce. Considering M ...
... Evolution by Natural Selection Darwin realized that Malthus’s hypotheses about human populations apply to all species. Every organism has the potential to produce many offspring during its lifetime. In most cases, however, only a limited number of those offspring survive to reproduce. Considering M ...
Decent With Modification Darwin`s Theory
... “When evolution is said to be a fact, not a theory, what is actually meant? That now-living things have descended from ancestors, with modification, over time? Or that the modifications came by chance, not by design? Or, in addition, that all living things ultimately had the same ancestor? Or, still ...
... “When evolution is said to be a fact, not a theory, what is actually meant? That now-living things have descended from ancestors, with modification, over time? Or that the modifications came by chance, not by design? Or, in addition, that all living things ultimately had the same ancestor? Or, still ...
The Auk - POST - Queen`s University
... By the mid-s, the pigeon fancy—the hobby of breeding, raising, and showing domesticated pigeon breeds—was in full flower in Europe but had just begun in North America, where formal publications and societies devoted to the birds did not appear until the s (Levi ). “Fancy” pigeons had been ...
... By the mid-s, the pigeon fancy—the hobby of breeding, raising, and showing domesticated pigeon breeds—was in full flower in Europe but had just begun in North America, where formal publications and societies devoted to the birds did not appear until the s (Levi ). “Fancy” pigeons had been ...
View/Open - Digital Collections Home
... examine how pelvic dimensions influence the shape of the femur within a biomechanical framework in a modern American White population. Specifically the research examines the relationship between sex differences in biacetabular breadth and femoral functional angles, and whether these differences are ...
... examine how pelvic dimensions influence the shape of the femur within a biomechanical framework in a modern American White population. Specifically the research examines the relationship between sex differences in biacetabular breadth and femoral functional angles, and whether these differences are ...
The Relation of Spencer`s Evolutionary Theory to Darwin`s
... expression. See Herbert Spencer, Principles of Biology, 2 vols. (New York: D. Appleton, 1866), 2: 53: ...
... expression. See Herbert Spencer, Principles of Biology, 2 vols. (New York: D. Appleton, 1866), 2: 53: ...
THE TROBRIANDIzATION OF THE WESTERN WORLD:
... mother-right. Totemic descent is through the mother; the children of the family are of her flesh and her clan only. The family is, however, still a well-established sociological unit. The wife moves to her husband’s village at marriage and the father is the ‘master’ of the household, but he has no r ...
... mother-right. Totemic descent is through the mother; the children of the family are of her flesh and her clan only. The family is, however, still a well-established sociological unit. The wife moves to her husband’s village at marriage and the father is the ‘master’ of the household, but he has no r ...
Fast identification and statistical evaluation
... • Genetic incompatibilities may be accelerated by a shift in mating system • Not something that can be studied in Drosophila, the predominant model for the genetics of speciation ...
... • Genetic incompatibilities may be accelerated by a shift in mating system • Not something that can be studied in Drosophila, the predominant model for the genetics of speciation ...
Long live the Red Queen? Examining environmental influences on
... taxa has proved something of an enigma to biologists for many years (Bell, 1982). ...
... taxa has proved something of an enigma to biologists for many years (Bell, 1982). ...
Coyne et al 1997 Evolution 51:643
... the SBT encompasses a diversity of evolutionary elements and processes (epistasis, pleiotropy, population structure, selection, and genetic drift), some may consider it more comprehensive than simple Fisherian selection in populations of reasonable size. Scope of the Theory.-Wright clearly thought t ...
... the SBT encompasses a diversity of evolutionary elements and processes (epistasis, pleiotropy, population structure, selection, and genetic drift), some may consider it more comprehensive than simple Fisherian selection in populations of reasonable size. Scope of the Theory.-Wright clearly thought t ...
Wallace and Natural Selection, 1858
... for a living. Natural history started as a hobby to be pursued in spare time; gradually it became a vocation to the extent permitted by the exigencies of survival. Both Wallace and Darwin owed their intellectual breakthroughs to long periods of exploration of unfamiliar biological terrain. Whereas D ...
... for a living. Natural history started as a hobby to be pursued in spare time; gradually it became a vocation to the extent permitted by the exigencies of survival. Both Wallace and Darwin owed their intellectual breakthroughs to long periods of exploration of unfamiliar biological terrain. Whereas D ...
Rapid evolution in crop-weed hybrids under artificial selection for
... significant role in the evolution of some weedy or invasive species (Ellstrand and Schierenbeck 2000; Arnold 2004). Ellstrand and Schierenbeck (2000) documented 28 examples of weedy, hybrid-derived taxa and suggested that their invasiveness may be a direct result of the effects of hybridization in m ...
... significant role in the evolution of some weedy or invasive species (Ellstrand and Schierenbeck 2000; Arnold 2004). Ellstrand and Schierenbeck (2000) documented 28 examples of weedy, hybrid-derived taxa and suggested that their invasiveness may be a direct result of the effects of hybridization in m ...
Frequency-Dependent Selection and the Evolution
... Doebeli 2005]. Alternatively, if the M1 and M2 alleles alter female preferences, then reproductive isolation will result if each allele becomes established in the subgroup containing the preferred male (e.g., Higashi et al. 1999; Kondrashov and Kondrashov 1999; Doebeli 2005). Speciation is more diff ...
... Doebeli 2005]. Alternatively, if the M1 and M2 alleles alter female preferences, then reproductive isolation will result if each allele becomes established in the subgroup containing the preferred male (e.g., Higashi et al. 1999; Kondrashov and Kondrashov 1999; Doebeli 2005). Speciation is more diff ...
PeterMoranPhDThesis - St Andrews Research Repository
... for sexual communication and readily hybridize in the laboratory, however little is known about species interactions in sympatric populations. I examine patterns of geographic variation in two key sexual traits: calling song and cuticular hydrocarbons (CHCs), and the geographic distribution of genet ...
... for sexual communication and readily hybridize in the laboratory, however little is known about species interactions in sympatric populations. I examine patterns of geographic variation in two key sexual traits: calling song and cuticular hydrocarbons (CHCs), and the geographic distribution of genet ...
- Wiley Online Library
... because it decreased hybridization with P. cuspidata (Hopkins & Rausher, 2012). Alternative hypotheses As already discussed, other evolutionary processes can cause divergence in reproductive traits between allopatric and sympatric populations. Even if reinforcement is acting to decrease hybridizatio ...
... because it decreased hybridization with P. cuspidata (Hopkins & Rausher, 2012). Alternative hypotheses As already discussed, other evolutionary processes can cause divergence in reproductive traits between allopatric and sympatric populations. Even if reinforcement is acting to decrease hybridizatio ...
What does Drosophila genetics tell us about speciation?
... 1/m, and ‘reproductive isolation’ as the product of the two, or s/m. Because s and m both have units of fractions of the population per unit time, the units cancel, and we are left with reproductive isolation that is equivalent to a dimensionless parameter measuring the relative strength of the two ...
... 1/m, and ‘reproductive isolation’ as the product of the two, or s/m. Because s and m both have units of fractions of the population per unit time, the units cancel, and we are left with reproductive isolation that is equivalent to a dimensionless parameter measuring the relative strength of the two ...
Mobility as an Emergent Property of Biological Organization: Insights
... evolve without changes in a suite of other traits. 2. Evolutionary changes in mobility will result in trade-offs and constraints among associated traits. Because mobility depends on so many traits at various lower levels of biological organization, its independent evolution will inevitably be constr ...
... evolve without changes in a suite of other traits. 2. Evolutionary changes in mobility will result in trade-offs and constraints among associated traits. Because mobility depends on so many traits at various lower levels of biological organization, its independent evolution will inevitably be constr ...
PopGen4: Assortative mating
... Positive assortative mating and the process of speciation We do not cover the topic of speciation in this course. However, it is worth noting the potentially important role that positive assortative mating could have in the process of speciation. There are many hypotheses about the causes of specia ...
... Positive assortative mating and the process of speciation We do not cover the topic of speciation in this course. However, it is worth noting the potentially important role that positive assortative mating could have in the process of speciation. There are many hypotheses about the causes of specia ...
Sexual selection
![](https://commons.wikimedia.org/wiki/Special:FilePath/Paon_blanc_Madère_2008.jpg?width=300)
Sexual selection is a mode of natural selection where typically members of one gender choose mates of the other gender to mate with, called intersexual selection, and where females normally do the choosing, and competition between members of the same gender to sexually reproduce with members of the opposite sex, called intrasexual selection. These two forms of selection mean that some individuals have better reproductive success than others within a population either from being sexier or preferring sexier partners to produce offspring. For instance in the breeding season sexual selection in frogs occurs with the males first gathering at the water's edge and croaking. The females then arrive and choose the males with the deepest croaks and best territories. Generalizing, males benefit from frequent mating and monopolizing access to a group of fertile females. Females have a limited number of offspring they can have and they maximize the return on the energy they invest in reproduction.First articulated by Charles Darwin who described it as driving speciation and that many organisms had evolved features whose function was deleterious to their individual survival, and then developed by Ronald Fisher in the early 20th century. Sexual selection can lead typically males to extreme efforts to demonstrate their fitness to be chosen by females, producing secondary sexual characteristics, such as ornate bird tails like the peacock plumage, or the antlers of deer, or the manes of lions, caused by a positive feedback mechanism known as a Fisherian runaway, where the passing on of the desire for a trait in one sex is as important as having the trait in the other sex in producing the runaway effect. Although the sexy son hypothesis indicates that females would prefer male sons, Fisher's principle explains why the sex ratio is 1:1 almost without exception. Sexual selection is also found in plants and fungi.The maintenance of sexual reproduction in a highly competitive world has long been one of the major mysteries of biology given that asexual reproduction can reproduce much more quickly as 50% of offspring are not males, unable to produce offspring themselves. However, research published in 2015 indicates that sexual selection can explain the persistence of sexual reproduction.