![Sexual Differentiation: From Genes to Gender](http://s1.studyres.com/store/data/006993004_1-929b98ead644e62471e9737df442563b-300x300.png)
Sexual Differentiation: From Genes to Gender
... development and wolffian regression), but who are discordant for hormonal sex (prenatal exposure to excessive androgens) and external genital sex (ambiguous or fully masculinized). A number of studies report masculinized or defeminized play behavior (an index of gender role) in CAH girls. In contras ...
... development and wolffian regression), but who are discordant for hormonal sex (prenatal exposure to excessive androgens) and external genital sex (ambiguous or fully masculinized). A number of studies report masculinized or defeminized play behavior (an index of gender role) in CAH girls. In contras ...
Why Creativity is Sexy: for Creative Abilities in Humans
... had the highest reproductive success. There is some evidence of differences in reproductive success not only between people in creative professions and those outside them, but also among the individuals in creative occupations. Clegg, Nettle, and Miell (2008) asked females to estimate the creativity ...
... had the highest reproductive success. There is some evidence of differences in reproductive success not only between people in creative professions and those outside them, but also among the individuals in creative occupations. Clegg, Nettle, and Miell (2008) asked females to estimate the creativity ...
Reproductive Physiology
... • Non-disjunction during meiosis I or II – Polyploidy • The incomplete separation of homologues during meiosis results in a zygote with too many chromosomes • Regarding the sex chromosomes, it may be – XXY (47 chromosomes total) » Klinefelter syndrome: Male sex organs; unusually small testes, steril ...
... • Non-disjunction during meiosis I or II – Polyploidy • The incomplete separation of homologues during meiosis results in a zygote with too many chromosomes • Regarding the sex chromosomes, it may be – XXY (47 chromosomes total) » Klinefelter syndrome: Male sex organs; unusually small testes, steril ...
Sexual Objectification of Pinoy Males in Billboard Advertisements
... women seemed to be a part of the pop culture [11]. Much have been investigated on the female, their bodies and representations but with less interest on its counterpart – the males. Inquiries surrounding men are few since most researchers are focused on the subordinate and submissive, women. Many th ...
... women seemed to be a part of the pop culture [11]. Much have been investigated on the female, their bodies and representations but with less interest on its counterpart – the males. Inquiries surrounding men are few since most researchers are focused on the subordinate and submissive, women. Many th ...
1534059 kozakboughman2015 predator-learning-mate
... In this study, we test the effects of trout predator attacks on both mate choice within species (sexual selection) and mate choice between species (sexual isolation). Cutthroat trout (Oncorhynchus clarki) are a common predator of threespine sticklebacks [46,60,61]. Female preference for conspecific ...
... In this study, we test the effects of trout predator attacks on both mate choice within species (sexual selection) and mate choice between species (sexual isolation). Cutthroat trout (Oncorhynchus clarki) are a common predator of threespine sticklebacks [46,60,61]. Female preference for conspecific ...
Minireview: Sex Chromosomes and Brain Sexual Differentiation
... fiber density in the lateral septum in vivo, it is possible that sex chromosome complement influences the levels of gonadal secretions some time during development, so that the group differences attributed to the sex chromosomes are explained by well-established laws of hormonal sexual differentiati ...
... fiber density in the lateral septum in vivo, it is possible that sex chromosome complement influences the levels of gonadal secretions some time during development, so that the group differences attributed to the sex chromosomes are explained by well-established laws of hormonal sexual differentiati ...
The History of Evolution`s Teaching of Women`s Inferiority
... American Indian custom which requires the husband to wrestle with male competitors to retain his wive; "the strongest party always carries off the prize."28 The result is, Darwin concluded, "a weak man ... is seldom permitted to keep a wife that a stronger man thinks worth his notice. This custom pr ...
... American Indian custom which requires the husband to wrestle with male competitors to retain his wive; "the strongest party always carries off the prize."28 The result is, Darwin concluded, "a weak man ... is seldom permitted to keep a wife that a stronger man thinks worth his notice. This custom pr ...
Sexual Selection and the Psychology of Intergroup Conflict
... over their life span; as a result, increasing the number of sexual partners does not increase reproductive success to the same degree as it does for men. In fact, it can place women at higher risk for harmful consequences of sex—such as those arising from infectious disease and low genetic quality o ...
... over their life span; as a result, increasing the number of sexual partners does not increase reproductive success to the same degree as it does for men. In fact, it can place women at higher risk for harmful consequences of sex—such as those arising from infectious disease and low genetic quality o ...
Sexual selection and the detection of ecological speciation
... care) or indirect (e.g. ‘good genes’ or ‘sexy sons’) (Kokko, 2003). If so, females may derive a high enough benefit from choosing males with larger trait values in both environments so that the expected signature of ecological speciation would not be evident in population crosses. Conserved preferen ...
... care) or indirect (e.g. ‘good genes’ or ‘sexy sons’) (Kokko, 2003). If so, females may derive a high enough benefit from choosing males with larger trait values in both environments so that the expected signature of ecological speciation would not be evident in population crosses. Conserved preferen ...
Current Issues – Perspectives and Reviews
... conferring a competitive advantage in mating could be favored, even if opposed by natural selection, Darwin proposed sexual selection to explain the paradoxical evolution of exaggerated male traits detrimental to survival. Such selection could occur either through direct male competition for mating ...
... conferring a competitive advantage in mating could be favored, even if opposed by natural selection, Darwin proposed sexual selection to explain the paradoxical evolution of exaggerated male traits detrimental to survival. Such selection could occur either through direct male competition for mating ...
POPULATION GENETIC THEORY OF THE ASSORTATIVE MATING
... roughly constant mating advantage to the preferred males: the female preference for a particular phenotype is expressed only by females who possess that phenotype; hence it is expressed in strict proportion to the frequencies of the males preferred, thus giving them a constant mating advantage. But ...
... roughly constant mating advantage to the preferred males: the female preference for a particular phenotype is expressed only by females who possess that phenotype; hence it is expressed in strict proportion to the frequencies of the males preferred, thus giving them a constant mating advantage. But ...
Courtship role reversal and deceptive signals in the
... We examined the function of secondary sexual characters in the role-reversed, lekking behaviour of female long-tailed dance flies, Rhamphomyia longicauda Loew (Empididae), to test the hypothesis that the degree of abdominal distention is an honest female signal about the state of egg development. Fe ...
... We examined the function of secondary sexual characters in the role-reversed, lekking behaviour of female long-tailed dance flies, Rhamphomyia longicauda Loew (Empididae), to test the hypothesis that the degree of abdominal distention is an honest female signal about the state of egg development. Fe ...
Current Genomics - Semantic Scholar
... traits which are also influenced by genetic information. Sexrelated genetics may be categorized by how sex affects phenotypic traits, including sex itself as a trait (i.e., sex determination), sex-linked trait, sex-limited trait, and sex-influenced trait. Sex determination depends on the existence o ...
... traits which are also influenced by genetic information. Sexrelated genetics may be categorized by how sex affects phenotypic traits, including sex itself as a trait (i.e., sex determination), sex-linked trait, sex-limited trait, and sex-influenced trait. Sex determination depends on the existence o ...
how policies affect MSM - People Living with HIV Stigma Index
... Evidence seems to indicate that increasingly many countries are enacting laws that criminalise HIV transmission, using words such as “actual”, “potential”, “negligent”, or “reckless”. Thus in Europe, out of 45 countries, in at least 36, the actual or potential transmission of HIV can constitute a cr ...
... Evidence seems to indicate that increasingly many countries are enacting laws that criminalise HIV transmission, using words such as “actual”, “potential”, “negligent”, or “reckless”. Thus in Europe, out of 45 countries, in at least 36, the actual or potential transmission of HIV can constitute a cr ...
Male birch catkin bugs vary copula duration to invest more in
... investment of limited reproductive resources. However, in many cases it can be difficult to interpret traits such as copula duration, because they are interacting phenotypes that ultimately depend upon both the male and female mating partner, and the sexes may frequently disagree over the optimal out ...
... investment of limited reproductive resources. However, in many cases it can be difficult to interpret traits such as copula duration, because they are interacting phenotypes that ultimately depend upon both the male and female mating partner, and the sexes may frequently disagree over the optimal out ...
pride and prejudice or children and cheating? jane austen`s
... while the costs are that he might gain a reputation as a ‘womanizer’ or face injury or death at the hands of a jealous rival. For the reasons outlined above, men are more likely than women to pursue short-term strategies, as the costs associated with short-term strategies are higher for women and th ...
... while the costs are that he might gain a reputation as a ‘womanizer’ or face injury or death at the hands of a jealous rival. For the reasons outlined above, men are more likely than women to pursue short-term strategies, as the costs associated with short-term strategies are higher for women and th ...
Chapter 3
... 3.2 The bowerbird and the artist: Key arguments When discussing the effects of sexual selection in The Descent of Man, Darwin alluded to a probable correlation between the human ‘passion for ornament’ and the affairs of choosing a mate. In a comparative exercise with the animal kingdom, he suggested ...
... 3.2 The bowerbird and the artist: Key arguments When discussing the effects of sexual selection in The Descent of Man, Darwin alluded to a probable correlation between the human ‘passion for ornament’ and the affairs of choosing a mate. In a comparative exercise with the animal kingdom, he suggested ...
The Effect of Visual Obstructions on the Sexual Behavior of Guppies
... The strength of mate choice and the intensity of sexual competition may be determined by factors that affect these behaviors. Female choosiness and male-male competition vary as a result of genetic and facultative behavioral responses to environmental conditions (Houde, 1997). The intensity of sexua ...
... The strength of mate choice and the intensity of sexual competition may be determined by factors that affect these behaviors. Female choosiness and male-male competition vary as a result of genetic and facultative behavioral responses to environmental conditions (Houde, 1997). The intensity of sexua ...
Mating Systems and Sexual Selection in Male
... no doubt will be discovered, but for now, three groups stand out as most promising for continued study of sexual selection. In katydids (family Tettigonidae), the male invests in progeny by transferring an edible spermatophylax to the female during copulation ( Brown and Gwynne 1997). Populations an ...
... no doubt will be discovered, but for now, three groups stand out as most promising for continued study of sexual selection. In katydids (family Tettigonidae), the male invests in progeny by transferring an edible spermatophylax to the female during copulation ( Brown and Gwynne 1997). Populations an ...
The ecology of sexual conflict: ecologically dependent parallel
... 2011). Natural selection on the traits involved in conflict could limit their exaggeration due to cost within an ecological context, thereby influencing the coevolutionary pathways followed (or not) by sexual conflict. Ecological selection could also drive trait evolution on its own, and if ecologic ...
... 2011). Natural selection on the traits involved in conflict could limit their exaggeration due to cost within an ecological context, thereby influencing the coevolutionary pathways followed (or not) by sexual conflict. Ecological selection could also drive trait evolution on its own, and if ecologic ...
Selection on male size, leg length and condition
... males on their moulting webs along ten randomly chosen 20 m long transects on about every second day. The whole study area was searched almost daily for penultimate females and associated males. Collected males were measured and marked on the same day of collection. If a male was found twice, only t ...
... males on their moulting webs along ten randomly chosen 20 m long transects on about every second day. The whole study area was searched almost daily for penultimate females and associated males. Collected males were measured and marked on the same day of collection. If a male was found twice, only t ...
THE VARIABILITY IS IN THE SEX CHROMOSOMES
... have heterogametic males and the last two groups have heterogametic females. We chose not to include other potentially interesting taxa with frequent sex-chromosome transitions, such as fish, amphibians, and reptiles (Ezaz et al. 2006; Mank et al. 2006), as these groups have indeterminate growth, an ...
... have heterogametic males and the last two groups have heterogametic females. We chose not to include other potentially interesting taxa with frequent sex-chromosome transitions, such as fish, amphibians, and reptiles (Ezaz et al. 2006; Mank et al. 2006), as these groups have indeterminate growth, an ...
Does courtship behavior contribute to species
... 2000 (allopatric G. texensis), Tuscaloosa, AL in 1999 and 2001 (both G. texensis and G. rubens in sympatry), and Gainesville, FL in 2000 and 2002 (allopatric G. rubens, year 2000 collections courtesy T. J. Walker and M. Velez). Adults used in the experiments were removed from culture within 48 h of ...
... 2000 (allopatric G. texensis), Tuscaloosa, AL in 1999 and 2001 (both G. texensis and G. rubens in sympatry), and Gainesville, FL in 2000 and 2002 (allopatric G. rubens, year 2000 collections courtesy T. J. Walker and M. Velez). Adults used in the experiments were removed from culture within 48 h of ...
MANAGING HORMONAL CHANGES IN MEN AND WOMEN …
... Although early perimenopausal women reported more frequent dyspareunia than did premenopausal women, there were no differences between the two groups in regard to sexual desire, satisfaction, arousal, physical pleasure, or the importance of sex. Seventy-seven percent of the women said that sex was m ...
... Although early perimenopausal women reported more frequent dyspareunia than did premenopausal women, there were no differences between the two groups in regard to sexual desire, satisfaction, arousal, physical pleasure, or the importance of sex. Seventy-seven percent of the women said that sex was m ...
European hair and eye color A case of frequency
... e-mails while blocking some legitimate ones. The cost may be justified if attraction to rare-color morphs leads to hybridization or if the color itself is somehow maladaptive. Otherwise, the benefit will not justify the cost. Rare-color advantage has been reported in humans. Thelen (1983) presented ...
... e-mails while blocking some legitimate ones. The cost may be justified if attraction to rare-color morphs leads to hybridization or if the color itself is somehow maladaptive. Otherwise, the benefit will not justify the cost. Rare-color advantage has been reported in humans. Thelen (1983) presented ...