THE PREDICTION OF ADAPTIVE EVOLUTION: EMPIRICAL
... The Soay sheep population inhabiting Village Bay on the island of Hirta, St. Kilda, has been the subject of intensive, individualbased study since 1985. Each year, extensive censusing and field work is conducted during which the majority of the lambs born in the study area are caught, individually t ...
... The Soay sheep population inhabiting Village Bay on the island of Hirta, St. Kilda, has been the subject of intensive, individualbased study since 1985. Each year, extensive censusing and field work is conducted during which the majority of the lambs born in the study area are caught, individually t ...
Bowler 2009 - California State University, Bakersfield
... important (this is the point of contention among experts studying Darwin’s notebooks), but the breeders certainly taught him one thing. He realized that in a domesticated population there is always a fund of apparently purposeless and undirected variation among individual organisms. Although convinc ...
... important (this is the point of contention among experts studying Darwin’s notebooks), but the breeders certainly taught him one thing. He realized that in a domesticated population there is always a fund of apparently purposeless and undirected variation among individual organisms. Although convinc ...
DarwinLs Originality
... important (this is the point of contention among experts studying Darwin’s notebooks), but the breeders certainly taught him one thing. He realized that in a domesticated population there is always a fund of apparently purposeless and undirected variation among individual organisms. Although convinc ...
... important (this is the point of contention among experts studying Darwin’s notebooks), but the breeders certainly taught him one thing. He realized that in a domesticated population there is always a fund of apparently purposeless and undirected variation among individual organisms. Although convinc ...
A review of The Structure of Evolutionary Theory
... text, on pages 43 and 136. “Evolutionary psychology” emerges only briefly, on pages 12631266. Robert Trivers is ignored (although reciprocal altruism creeps in, on pg. 134, unattributed); William D. Hamilton barely makes it. E. O. Wilson shows up only once, courtesy of his multi-authored textbook, n ...
... text, on pages 43 and 136. “Evolutionary psychology” emerges only briefly, on pages 12631266. Robert Trivers is ignored (although reciprocal altruism creeps in, on pg. 134, unattributed); William D. Hamilton barely makes it. E. O. Wilson shows up only once, courtesy of his multi-authored textbook, n ...
Beak of Finches Questions
... 12) The most likely explanation for the variation in the beak size of the medium ground finch shown in the graph is that A) different adaptations gave some birds a better chance for survival B) the environment caused the birds to exercise their beaks and the beaks became longer and stronger C) the b ...
... 12) The most likely explanation for the variation in the beak size of the medium ground finch shown in the graph is that A) different adaptations gave some birds a better chance for survival B) the environment caused the birds to exercise their beaks and the beaks became longer and stronger C) the b ...
Pollen limitation and its influence on natural selection through seed set
... explicit tests of this hypothesis, however, have provided conflicting support. Using the arithmetic relationship between these two quantities, we show that increased pollen limitation will automatically result in stronger selection (all else equal) although other factors can alter selection independ ...
... explicit tests of this hypothesis, however, have provided conflicting support. Using the arithmetic relationship between these two quantities, we show that increased pollen limitation will automatically result in stronger selection (all else equal) although other factors can alter selection independ ...
File
... • Drug and alcohol use: Increases the rates of victimization. • High-risk sexual behaviors: Vulnerability is often a consequence of childhood sexual abuse. • Poverty: May trade sex for basic needs. ...
... • Drug and alcohol use: Increases the rates of victimization. • High-risk sexual behaviors: Vulnerability is often a consequence of childhood sexual abuse. • Poverty: May trade sex for basic needs. ...
Genome-wide scans for loci under selection in
... detect balancing selection if it has acted for a very long time period. Interestingly, Simonsen et al. also found that the power of these tests could drop below the nominal false-positive rate, a, if non-neutral evolution did not occur within these critical time windows, thus creating the undesirabl ...
... detect balancing selection if it has acted for a very long time period. Interestingly, Simonsen et al. also found that the power of these tests could drop below the nominal false-positive rate, a, if non-neutral evolution did not occur within these critical time windows, thus creating the undesirabl ...
The Life Course Development of Human Sexual Orientation: An
... Homosexual behavior is common across cultures but takes on a variety of social forms [Greenberg, 1988; Herdt, 1997]. That is, the notion of sexual orientation understood in much of Western culture through the ‘gay-straight’ dichotomy is extremely rare; few cultures reveal patterns of exclusive homos ...
... Homosexual behavior is common across cultures but takes on a variety of social forms [Greenberg, 1988; Herdt, 1997]. That is, the notion of sexual orientation understood in much of Western culture through the ‘gay-straight’ dichotomy is extremely rare; few cultures reveal patterns of exclusive homos ...
Research Article The Evaluation of Sexual Functions and Sex
... with endocrinopathies were excluded from the study. ...
... with endocrinopathies were excluded from the study. ...
Lab 13- Evolution and Natural Selection
... population, the allele frequency of the population would certainly change, but the cause of the change is completely random. This is an example of genetic drift. It is most significant in small populations. 4. Natural Selection Charles Darwin based his theory of natural selection as the driving for ...
... population, the allele frequency of the population would certainly change, but the cause of the change is completely random. This is an example of genetic drift. It is most significant in small populations. 4. Natural Selection Charles Darwin based his theory of natural selection as the driving for ...
Darwin`s Theory of Natural Selection
... 3. Fill in Darwin’s 5 steps of Natural Selection to the peppered moths: I. Variation among offspring (how do moths differ that is applicable here?) II. Overproduction of offspring (how many moths does on female lay?) ...
... 3. Fill in Darwin’s 5 steps of Natural Selection to the peppered moths: I. Variation among offspring (how do moths differ that is applicable here?) II. Overproduction of offspring (how many moths does on female lay?) ...
Sexual Imprinting and Evolutionary Processes in Birds: A
... species. Male mallards face this difficulty, as females of many other duck species are similar in appearance. For the mallard, both functional explanations make sense intuitively and this will have contributed to their reiteration in the literature right up to the present day (e.g., McFarland, 1993) ...
... species. Male mallards face this difficulty, as females of many other duck species are similar in appearance. For the mallard, both functional explanations make sense intuitively and this will have contributed to their reiteration in the literature right up to the present day (e.g., McFarland, 1993) ...
When Are Adult-Child Sexual Encounters Acceptable?
... and victim relationships in child sexual abuse cases. Most child sexual abuse victims are familiar with or known to their abuser. Child sexual abuse victims often perceive their abuser as an authority figure such as a parent, teacher, neighbor, or family friend. Perpetrators use this preexisting rel ...
... and victim relationships in child sexual abuse cases. Most child sexual abuse victims are familiar with or known to their abuser. Child sexual abuse victims often perceive their abuser as an authority figure such as a parent, teacher, neighbor, or family friend. Perpetrators use this preexisting rel ...
Adaptation to Sperm Competition in Humans
... That the penis must reach an adequate depth before semen is displaced suggests that displacing rival semen may require specific copulatory behaviors. Following allegations of female infidelity or separation from their partners (contexts in which the likelihood of rival semen being present is relativ ...
... That the penis must reach an adequate depth before semen is displaced suggests that displacing rival semen may require specific copulatory behaviors. Following allegations of female infidelity or separation from their partners (contexts in which the likelihood of rival semen being present is relativ ...
Modern application of evolutionary theory to psychology: Key
... and to have a higher parasite load. Thus, the large bright tail feathers are an honest signal of health, and peahens would be reproductively wise to select as mates males with such tails (who sire offspring that share their high-quality genes). In many species, particularly polygynous species in w ...
... and to have a higher parasite load. Thus, the large bright tail feathers are an honest signal of health, and peahens would be reproductively wise to select as mates males with such tails (who sire offspring that share their high-quality genes). In many species, particularly polygynous species in w ...
The Long-Term Habituation of Sexual Arousal in
... A recent review of the conditioning of human sexual arousal (O'Donohue & Plaud, 1994) suggests that, despite the importance that contemporary theorists of human sexuality place on the notion that sexual behavior is learned, scientific information about human learning and sexual arousal is still some ...
... A recent review of the conditioning of human sexual arousal (O'Donohue & Plaud, 1994) suggests that, despite the importance that contemporary theorists of human sexuality place on the notion that sexual behavior is learned, scientific information about human learning and sexual arousal is still some ...
6-15 CRW edit, JS intro, chp 1 and 2 copy
... They are also considered to be “Lamarckian”. We also need to consider how much of evolution that is “neutral”-that is, not the result of adaptations, not a product of natural selection. And even after all known processes are considered, some evolutionists still ask if there is an overriding process ...
... They are also considered to be “Lamarckian”. We also need to consider how much of evolution that is “neutral”-that is, not the result of adaptations, not a product of natural selection. And even after all known processes are considered, some evolutionists still ask if there is an overriding process ...
The influence of conservation breeding programs on animal
... greater reproductive success, whilst secondary sexual characteristics are described as an exaggerated feature which improves success in the forms of body size, skin colour and weaponry. Zoos are being encouraged to conserve endangered species with the hope of a possible reintroduction to their nativ ...
... greater reproductive success, whilst secondary sexual characteristics are described as an exaggerated feature which improves success in the forms of body size, skin colour and weaponry. Zoos are being encouraged to conserve endangered species with the hope of a possible reintroduction to their nativ ...
SEXUAL REvoLUtion :
... and not always positive, directions. Gender views on gender, sex, and marriage is the roles and views on sex and marriage are idea that there is no difference between radically different from what they were in male and female. This concept has opened the 19th century. The perceptions that were the d ...
... and not always positive, directions. Gender views on gender, sex, and marriage is the roles and views on sex and marriage are idea that there is no difference between radically different from what they were in male and female. This concept has opened the 19th century. The perceptions that were the d ...
Talking With Kids about Sex, Love, and Character
... almost a year, and I loved her very much. She was friendly, outgoing, charismatic. We'd done everything but have intercourse, and then one night she asked if we could go all the way. A few days later, we broke up. It was the most painful time of my life. I had opened myself up to her more than I had ...
... almost a year, and I loved her very much. She was friendly, outgoing, charismatic. We'd done everything but have intercourse, and then one night she asked if we could go all the way. A few days later, we broke up. It was the most painful time of my life. I had opened myself up to her more than I had ...
Segregation and the Evolution of Sex Under Overdominant Selection
... favored under overdominant selection due to the segregation load by investigating whether circumstances promoting increased sex exist within a population that is capable of both sexual and asexual reproduction, as is common among fungi, protists, algae, plants, and various invertebrate animal groups ...
... favored under overdominant selection due to the segregation load by investigating whether circumstances promoting increased sex exist within a population that is capable of both sexual and asexual reproduction, as is common among fungi, protists, algae, plants, and various invertebrate animal groups ...
The role of linkage disequilibrium in the evolution of
... than sympatric speciation because much of the divergence between populations required for long-term persistence has evolved in allopatry (Kirkpatrick and Ravigné, 2002). Given that two-allele models of successful sympatric speciation are not uncommon, similarly successful two-allele models of reinf ...
... than sympatric speciation because much of the divergence between populations required for long-term persistence has evolved in allopatry (Kirkpatrick and Ravigné, 2002). Given that two-allele models of successful sympatric speciation are not uncommon, similarly successful two-allele models of reinf ...
LOSS OF SEXUAL RECOMBINATION AND SEGREGATION IS
... recombination and segregation associated with asexual reproduction dramatically reduces diversification. In particular, it has been argued that the reduced genetic variance and limited adaptive potential associated with many asexual populations might impede speciation (Stebbins 1950; Bell 1982). Add ...
... recombination and segregation associated with asexual reproduction dramatically reduces diversification. In particular, it has been argued that the reduced genetic variance and limited adaptive potential associated with many asexual populations might impede speciation (Stebbins 1950; Bell 1982). Add ...
The Sex Exploiter - La Strada International
... may be capable of consenting to a sexual relationship with a nineteen year old girl or ...
... may be capable of consenting to a sexual relationship with a nineteen year old girl or ...
Sexual selection
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.