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Population Variation in Continuously Varying Traits as an Ecological
... selection resulting from a new colonization laboratory populations showing that hetshould have long ceased. Given typical erozygotes exhibited less environmental heritabilities and strengths of stabilizing variation than homozygotes. This provides selection, variances should have equilibrat- a basis ...
... selection resulting from a new colonization laboratory populations showing that hetshould have long ceased. Given typical erozygotes exhibited less environmental heritabilities and strengths of stabilizing variation than homozygotes. This provides selection, variances should have equilibrat- a basis ...
PDF - Hofstra University
... report the crime, more likely to blame themselves and be blamed by others, and less likely to believe themselves deserving of sympathy or professional help. Nonstranger rape victims often have difficulty forming relationships because, according to one clinical study, they have strong doubts about th ...
... report the crime, more likely to blame themselves and be blamed by others, and less likely to believe themselves deserving of sympathy or professional help. Nonstranger rape victims often have difficulty forming relationships because, according to one clinical study, they have strong doubts about th ...
Convergence, Adaptation, and Constraint The Harvard community
... quite high in circumstances in which clades are diversifying under the influence only of genetic drift (Fig. 1). In addition, shared biases in the production of variation, commonly called constraints, can lead to convergence. If the possible variants that can be produced are limited, then unrelated ...
... quite high in circumstances in which clades are diversifying under the influence only of genetic drift (Fig. 1). In addition, shared biases in the production of variation, commonly called constraints, can lead to convergence. If the possible variants that can be produced are limited, then unrelated ...
Synthetic analyses of phenotypic selection in natural
... Natural and sexual selection are the primary mechanisms that cause adaptive evolution within natural populations (Darwin 1859). Despite the centrality of selection to Darwin’s theory of evolution, he never quantified selection in the wild. In the century following the publication of The Origin of Sp ...
... Natural and sexual selection are the primary mechanisms that cause adaptive evolution within natural populations (Darwin 1859). Despite the centrality of selection to Darwin’s theory of evolution, he never quantified selection in the wild. In the century following the publication of The Origin of Sp ...
II. Hardy-Weinberg Principle, cont
... III. A HISTORY OF EVOLUTIONARY THEORY, cont • Darwin, cont o Observed many examples of adaptations Inherited characteristics that enhance organisms’ survival and reproduction o Based on principles of natural selection Populations of organisms can change over the generations if individuals having ...
... III. A HISTORY OF EVOLUTIONARY THEORY, cont • Darwin, cont o Observed many examples of adaptations Inherited characteristics that enhance organisms’ survival and reproduction o Based on principles of natural selection Populations of organisms can change over the generations if individuals having ...
The Natures of Selection
... Are drift and selection forces? It is best not to phrase the question as bluntly as this. Instead, one should simply ask in what respects drift and selection resemble Newtonian forces, and in what ways they differ, paying attention all the time to the dangers of a seductive metaphor. Christopher Ste ...
... Are drift and selection forces? It is best not to phrase the question as bluntly as this. Instead, one should simply ask in what respects drift and selection resemble Newtonian forces, and in what ways they differ, paying attention all the time to the dangers of a seductive metaphor. Christopher Ste ...
Peer-reviewed Article PDF - e
... a sonnet, the Tuscan poet Antonio Camelli complains of having contracted syphilis when he had had “normal” sexual intercourse, instead of anal sex [21-23]. The role of married men in sustaining transmission of syphilis was sufficiently demonstrated in Renaissance Italy during the so-called ‘Italian ...
... a sonnet, the Tuscan poet Antonio Camelli complains of having contracted syphilis when he had had “normal” sexual intercourse, instead of anal sex [21-23]. The role of married men in sustaining transmission of syphilis was sufficiently demonstrated in Renaissance Italy during the so-called ‘Italian ...
ORIGINAL RESEARCH—EJACULATORY DISORDERS Premature
... the lack of awareness of treatment options for PE. In addition, several factors surrounding this condition limit clinicians from having an in-depth understanding of and sophisticated means for assessing it, including the lack of a commonly accepted definition of PE, lack of validated measures for eva ...
... the lack of awareness of treatment options for PE. In addition, several factors surrounding this condition limit clinicians from having an in-depth understanding of and sophisticated means for assessing it, including the lack of a commonly accepted definition of PE, lack of validated measures for eva ...
The influence of sex and body size on food habits of a giant tropical
... snake groups, P > 0·40). Inspection of the raw data indicates that the seasonal shift in dietary composition in juvenile female pythons reflected a higher proportion of birds taken in April 1995 (i.e. trip 3) than on the other two trips. Effect of body size and sex: body size strongly affected dieta ...
... snake groups, P > 0·40). Inspection of the raw data indicates that the seasonal shift in dietary composition in juvenile female pythons reflected a higher proportion of birds taken in April 1995 (i.e. trip 3) than on the other two trips. Effect of body size and sex: body size strongly affected dieta ...
Constructing sexual citizenship: theorizing sexual rights
... towards sexual conduct between men and women in both public and private settings, fuelled by this view of what people should properly be engaging in sex for, it can prohibit certain heterosexual practices. It is, for instance, illegal for heterosexual couples to engage in oral sex in a number of sta ...
... towards sexual conduct between men and women in both public and private settings, fuelled by this view of what people should properly be engaging in sex for, it can prohibit certain heterosexual practices. It is, for instance, illegal for heterosexual couples to engage in oral sex in a number of sta ...
Chapter 17 Evolution of Populations
... After Mendel’s work was rediscovered around 1900, genetics took off like a rocket. Researchers discovered that heritable traits are controlled by genes that are carried on chromosomes. They learned how changes in genes and chromosomes generate variation. All these discoveries in genetics fit perfectl ...
... After Mendel’s work was rediscovered around 1900, genetics took off like a rocket. Researchers discovered that heritable traits are controlled by genes that are carried on chromosomes. They learned how changes in genes and chromosomes generate variation. All these discoveries in genetics fit perfectl ...
Campbell Biology: Concepts and Connections, 8e (Reece et al
... C) Organisms change by random chance. D) Heritable traits that promote reproduction become more frequent in a population from one generation to the next. Answer: D Topic: 13.13 Skill: Knowledge/Comprehension Learning Outcome: 13.10 36) Which of the following will tend to produce adaptive changes in ...
... C) Organisms change by random chance. D) Heritable traits that promote reproduction become more frequent in a population from one generation to the next. Answer: D Topic: 13.13 Skill: Knowledge/Comprehension Learning Outcome: 13.10 36) Which of the following will tend to produce adaptive changes in ...
Natural Selection on Testosterone Production in a Wild Songbird
... Testosterone-treated males more than compensated for reduced survival by siring more offspring via extrapair fertilizations than did controls, and as a result, they had higher fitness as measured by l, the projected relative rate of population growth (Raouf et al. 1997; Reed et al. 2006). These resu ...
... Testosterone-treated males more than compensated for reduced survival by siring more offspring via extrapair fertilizations than did controls, and as a result, they had higher fitness as measured by l, the projected relative rate of population growth (Raouf et al. 1997; Reed et al. 2006). These resu ...
Investigating the Social and Cognitive Factors Influencing Risky
... how these distinct factors influence individuals as well as each other to impact behavior. Neurological research indicates that the brain continues to develop beyond childhood into early adulthood (Giedd et al., 1999; Casey & Jones, 2010). During this period, areas of the brain undergo morphological ...
... how these distinct factors influence individuals as well as each other to impact behavior. Neurological research indicates that the brain continues to develop beyond childhood into early adulthood (Giedd et al., 1999; Casey & Jones, 2010). During this period, areas of the brain undergo morphological ...
15-3 Darwin Presents His Case
... Summary of Darwin's Theory Individual organisms differ, and some of this variation is heritable. Organisms produce more offspring than can survive, and many that do survive do not reproduce. Because more organisms are produced than can survive, they compete for limited resources. Slide 33 of 41 Copy ...
... Summary of Darwin's Theory Individual organisms differ, and some of this variation is heritable. Organisms produce more offspring than can survive, and many that do survive do not reproduce. Because more organisms are produced than can survive, they compete for limited resources. Slide 33 of 41 Copy ...
reporting sexual assault of women in the military
... This policy raises some privacy concerns, because even though the military is run by its own judicial system separate from civilian society, it still must work within the bounds of the Constitution. Recognizing the ineffectiveness of its reporting policy, the federal government recently instituted a ...
... This policy raises some privacy concerns, because even though the military is run by its own judicial system separate from civilian society, it still must work within the bounds of the Constitution. Recognizing the ineffectiveness of its reporting policy, the federal government recently instituted a ...
A penological approach to the social construct of
... values from the community and their personal histories into the prison setting. They further argued that certain behaviors were more accepted among inmates because they were already exposed to and accepting of those behaviors in the subculture where they lived before they entered prison. Early rese ...
... values from the community and their personal histories into the prison setting. They further argued that certain behaviors were more accepted among inmates because they were already exposed to and accepting of those behaviors in the subculture where they lived before they entered prison. Early rese ...
Chapter15_Section03_edited
... survive, and many that do survive do not reproduce. Because more organisms are produced than can survive, they compete for limited resources. Slide 33 of 41 Copyright Pearson Prentice Hall ...
... survive, and many that do survive do not reproduce. Because more organisms are produced than can survive, they compete for limited resources. Slide 33 of 41 Copyright Pearson Prentice Hall ...
Additional Reading - Face Research Lab
... requires us to take into account further, more specific, influences. For example, since human beings have a long gestation period within the female’s body, internal fertilisation, and poor infant survival without the efforts of two parents, these considerations can be used to generate specific – or ...
... requires us to take into account further, more specific, influences. For example, since human beings have a long gestation period within the female’s body, internal fertilisation, and poor infant survival without the efforts of two parents, these considerations can be used to generate specific – or ...
Environmental Grain, Organism Fitness, and Type
... depend on the season, the number and kinds of parasites that it has or will have, and the cognitive and physical properties of other nearby house sparrows. The preceding discussion suggests ways in which very small-scale, detailed patterns of variation might affect the survival and reproduction of a ...
... depend on the season, the number and kinds of parasites that it has or will have, and the cognitive and physical properties of other nearby house sparrows. The preceding discussion suggests ways in which very small-scale, detailed patterns of variation might affect the survival and reproduction of a ...
session_proposal_Space_Evo_Exp_Ishpssb2013 general
... (Pearl 2000, Woodward 2005, Machamer, Darden and Craver 2000); and 2) of the increasing exploration of various fields of evolutionary biology. Even though the main dichotomies have not been challenged, philosophical issues now rely on a finer-grained understanding of the explanatory structure of bio ...
... (Pearl 2000, Woodward 2005, Machamer, Darden and Craver 2000); and 2) of the increasing exploration of various fields of evolutionary biology. Even though the main dichotomies have not been challenged, philosophical issues now rely on a finer-grained understanding of the explanatory structure of bio ...
Invitation to the Life Span by Kathleen Stassen Berger
... Teaching and Learning Entering a New School – The transition from one school to another often impairs a young person’s ability to function and learn. – Changing schools just when the growth spurt is occurring and sexual characteristics are developing is bound to create stress. – The first year in a ...
... Teaching and Learning Entering a New School – The transition from one school to another often impairs a young person’s ability to function and learn. – Changing schools just when the growth spurt is occurring and sexual characteristics are developing is bound to create stress. – The first year in a ...
PSYC 1643 - Testbankster.com
... 6. “Sexual health” refers to the lack of dysfunctions and the absence of sexually transmitted infections. Answer: False Page Ref: 8 7. “Intrapersonal” experience means experiences within ourselves. Answer: True Page Ref: 8 8. Social identity theory focuses on how people identify themselves through t ...
... 6. “Sexual health” refers to the lack of dysfunctions and the absence of sexually transmitted infections. Answer: False Page Ref: 8 7. “Intrapersonal” experience means experiences within ourselves. Answer: True Page Ref: 8 8. Social identity theory focuses on how people identify themselves through t ...
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.