Chapter 4
... Ideas About Earth’s History New ideas about age of Earth (Charles Lyell’s Principles of Geology) provided enough time for adaptations to occur supported Darwin’s idea that species change over time. **Current evidence for Earth’s age = ~ 4.6 billion years ...
... Ideas About Earth’s History New ideas about age of Earth (Charles Lyell’s Principles of Geology) provided enough time for adaptations to occur supported Darwin’s idea that species change over time. **Current evidence for Earth’s age = ~ 4.6 billion years ...
Advances in Environmental Biology
... of sexual desire and problems in reaching orgasm. However, it has been shown that orgasmic disorders were less prevalent before consumption of antidepressants (15-20%) [8]. In general, antidepressants can disturb an individual’s sexual function. Therefore, they can affect all the stages of sexual ac ...
... of sexual desire and problems in reaching orgasm. However, it has been shown that orgasmic disorders were less prevalent before consumption of antidepressants (15-20%) [8]. In general, antidepressants can disturb an individual’s sexual function. Therefore, they can affect all the stages of sexual ac ...
Sexual Intercourse and Relationship Development
... who feel affection for and commitment to their partner (Sherwin & Corbett, 1985). However, there are gender differences in the role relationship quality plays in the decision to have intercourse. For example, in one study, 95% of women, compared to 40% of men, stated that affection or emotional invo ...
... who feel affection for and commitment to their partner (Sherwin & Corbett, 1985). However, there are gender differences in the role relationship quality plays in the decision to have intercourse. For example, in one study, 95% of women, compared to 40% of men, stated that affection or emotional invo ...
EVOLUTION - Carol Eunmi LEE - University of Wisconsin–Madison
... Genes mutate, resulting in different alleles Evolution occurs at the population level, due to a change in proportions of individuals with different genotypes Changes in proportion in a population could occur via random genetic drift (Sewall Wright) or Natural Selection… the rate of mutation is usual ...
... Genes mutate, resulting in different alleles Evolution occurs at the population level, due to a change in proportions of individuals with different genotypes Changes in proportion in a population could occur via random genetic drift (Sewall Wright) or Natural Selection… the rate of mutation is usual ...
Of Darwin and Other Demons: the Evolutionary Turn in Aesthetics
... The second main interest in evolutionary aesthetics is the process of sexual selection, and in particular the role of aesthetic considerations during courtship display and mate choice. Observations across a wide range of species yield numerous examples of sexually dimorphic traits, or phenotypic cha ...
... The second main interest in evolutionary aesthetics is the process of sexual selection, and in particular the role of aesthetic considerations during courtship display and mate choice. Observations across a wide range of species yield numerous examples of sexually dimorphic traits, or phenotypic cha ...
1 Two Human Natures: How Men and Women Evolved Different
... sex-specific developments are known as secondary sexual characteristics. An anatomical example that has evolved through natural selection is the pubertal widening of the pelvic bone that occurs in girls but not in boys (Geary, 1998). In addition, since individuals fully enter the mating game at pube ...
... sex-specific developments are known as secondary sexual characteristics. An anatomical example that has evolved through natural selection is the pubertal widening of the pelvic bone that occurs in girls but not in boys (Geary, 1998). In addition, since individuals fully enter the mating game at pube ...
Document
... related organisms will be more similar to one another than more distantly related organisms. • Comparison of the human genetic code with that of other organisms show that chimpanzees are nearly genetically identical (differ by less than 1.2%) whereas the mouse differs by ≈15%. ...
... related organisms will be more similar to one another than more distantly related organisms. • Comparison of the human genetic code with that of other organisms show that chimpanzees are nearly genetically identical (differ by less than 1.2%) whereas the mouse differs by ≈15%. ...
In the heat of the night, it is difficult to get it right*teenagers` attitudes
... almost always test for Chlamydia, but they do not test for anything else as far as I know. à You do not have the same knowledge about other venereal infections on the whole. à The general increase and high prevalence of Chlamydia appears to make the teenagers feel less stigmatized than they might ha ...
... almost always test for Chlamydia, but they do not test for anything else as far as I know. à You do not have the same knowledge about other venereal infections on the whole. à The general increase and high prevalence of Chlamydia appears to make the teenagers feel less stigmatized than they might ha ...
Compulsive Masturbation Treated with Selective Serotonin
... life from infancy to old age, but this viewpoint was not always accepted. Freud believed that neurasthenia was caused by excessive masturbation. In the early 1900s, masturbatory insanity was a common diagnosis in hospitals for the criminally insane in the United States. Masturbation is abnormal when ...
... life from infancy to old age, but this viewpoint was not always accepted. Freud believed that neurasthenia was caused by excessive masturbation. In the early 1900s, masturbatory insanity was a common diagnosis in hospitals for the criminally insane in the United States. Masturbation is abnormal when ...
22B1-DarwinianRevolution
... • The origin of the fauna of the Galapagos, 900 km west of the South American coast, especially puzzled Darwin. • On further study after his voyage, Darwin noted that while most of the animal species on the Galapagos lived nowhere else, they resembled species living on the South American mainland. ...
... • The origin of the fauna of the Galapagos, 900 km west of the South American coast, especially puzzled Darwin. • On further study after his voyage, Darwin noted that while most of the animal species on the Galapagos lived nowhere else, they resembled species living on the South American mainland. ...
Nerve activates contraction
... • The origin of the fauna of the Galapagos, 900 km west of the South American coast, especially puzzled Darwin. • On further study after his voyage, Darwin noted that while most of the animal species on the Galapagos lived nowhere else, they resembled species living on the South American mainland. ...
... • The origin of the fauna of the Galapagos, 900 km west of the South American coast, especially puzzled Darwin. • On further study after his voyage, Darwin noted that while most of the animal species on the Galapagos lived nowhere else, they resembled species living on the South American mainland. ...
chapter 22 descent with modification
... • The origin of the fauna of the Galapagos, 900 km west of the South American coast, especially puzzled Darwin. • On further study after his voyage, Darwin noted that while most of the animal species on the Galapagos lived nowhere else, they resembled species living on the South American mainland. ...
... • The origin of the fauna of the Galapagos, 900 km west of the South American coast, especially puzzled Darwin. • On further study after his voyage, Darwin noted that while most of the animal species on the Galapagos lived nowhere else, they resembled species living on the South American mainland. ...
Sex, Drugs, and Rock `N` Roll: Hypothesizing
... similar to those in opiate abstinence. Moreover, the concept that food, drugs, and sex are common addictions, while receiving recent note, has been the subject of earlier investigation (Joranby, Frost-Pineda & Gold 2005). Of interest is the fact that individuals caught up in their specific addiction ...
... similar to those in opiate abstinence. Moreover, the concept that food, drugs, and sex are common addictions, while receiving recent note, has been the subject of earlier investigation (Joranby, Frost-Pineda & Gold 2005). Of interest is the fact that individuals caught up in their specific addiction ...
Natural selection and animal personality
... 2001). This result indicates that selection studies should be performed on the long-term if we want to understand both the immediate consequences (within a year) and longer term effects (across several generations) of selection on populations. Fitness consequences: offspring production and recruitme ...
... 2001). This result indicates that selection studies should be performed on the long-term if we want to understand both the immediate consequences (within a year) and longer term effects (across several generations) of selection on populations. Fitness consequences: offspring production and recruitme ...
Crossing the Line: Sexual Harassment at School Executive
... research showing that girls are sexually harassed more frequently than boys (Sagrestano, 2009; Ormerod et al., 2008; AAUW, 2001) and that girls’ experiences tend to be more physical and intrusive than boys’ experiences (Hand & Sanchez, 2000). Being called gay or lesbian in a negative way is sexual h ...
... research showing that girls are sexually harassed more frequently than boys (Sagrestano, 2009; Ormerod et al., 2008; AAUW, 2001) and that girls’ experiences tend to be more physical and intrusive than boys’ experiences (Hand & Sanchez, 2000). Being called gay or lesbian in a negative way is sexual h ...
Evolution of Darwin`s finches caused by a rare climatic event
... Populations of animals and plants often undergo conspicuous ecological changes when subjected to climatic extremes. Evolutionary changes may accompany them but are less easily detected. We show that Darwin's finches on a Galapagos island underwent two evolutionary changes after a severe El Nino even ...
... Populations of animals and plants often undergo conspicuous ecological changes when subjected to climatic extremes. Evolutionary changes may accompany them but are less easily detected. We show that Darwin's finches on a Galapagos island underwent two evolutionary changes after a severe El Nino even ...
Paraphilia and Fetishism - Mindful Publications, LLC
... about every conceivable object as his or her fetish. Steele (1996, p. 26) lists some of the objects she encountered as fetishes in her investigation: hairbrushes, artificial limbs, safety pins, snails, cockroaches, whips, roses, eyeglasses, and the handlebars of an Italian racing bike. Still, some o ...
... about every conceivable object as his or her fetish. Steele (1996, p. 26) lists some of the objects she encountered as fetishes in her investigation: hairbrushes, artificial limbs, safety pins, snails, cockroaches, whips, roses, eyeglasses, and the handlebars of an Italian racing bike. Still, some o ...
Chapter 10: Sexual Expression
... 47. What are sexual cognitions? a. Thoughts about sex b. Behaviors related to sex c. Hormonal responses to sexual stimuli d. Assessments of a partner’s sexual performance ANSWER: a DIFFICULTY: Think Critically REFERENCES: Solitary Sexual Behavior 48. What is true about men and women’s sexual fantasi ...
... 47. What are sexual cognitions? a. Thoughts about sex b. Behaviors related to sex c. Hormonal responses to sexual stimuli d. Assessments of a partner’s sexual performance ANSWER: a DIFFICULTY: Think Critically REFERENCES: Solitary Sexual Behavior 48. What is true about men and women’s sexual fantasi ...
The Ape That Thought It Was a Peacock: Does Evolutionary
... The discussion of the evolution of sex differences started with Charles Darwin (1859, 1871). The great naturalist was puzzled by a widespread trend in the animal kingdom. In many species, males and females differ from one another, both morphologically and behaviorally (Andersson, 1994; Clutton-Brock ...
... The discussion of the evolution of sex differences started with Charles Darwin (1859, 1871). The great naturalist was puzzled by a widespread trend in the animal kingdom. In many species, males and females differ from one another, both morphologically and behaviorally (Andersson, 1994; Clutton-Brock ...
Document
... • In 1844, Darwin wrote an essay on natural selection as the mechanism of descent with modification, but did not introduce his theory publicly • Natural selection is a process in which individuals with favorable inherited traits are more likely to survive and reproduce • In June 1858, Darwin receiv ...
... • In 1844, Darwin wrote an essay on natural selection as the mechanism of descent with modification, but did not introduce his theory publicly • Natural selection is a process in which individuals with favorable inherited traits are more likely to survive and reproduce • In June 1858, Darwin receiv ...
Sexual Desire, Erection, Orgasm and Ejaculatory
... had been without a partner for less than 5 years and 8% for more than 5 years. Three men (1%) reported that they never had a steady partner. Of all men, 53% stated that they would have intercourse more often if they had a willing sexual partner. Of those, 29% stated that they would have intercourse ...
... had been without a partner for less than 5 years and 8% for more than 5 years. Three men (1%) reported that they never had a steady partner. Of all men, 53% stated that they would have intercourse more often if they had a willing sexual partner. Of those, 29% stated that they would have intercourse ...
The competitive Darwin - Biology Learning Center
... a disadvantage and are likely to fall prey to a predator. Away from rocks, as when males move between rocky outcrops, they are at relatively high risk, for under such conditions their specialized structures are relatively inappropriate. In this way the environment determines the pattern of survival ...
... a disadvantage and are likely to fall prey to a predator. Away from rocks, as when males move between rocky outcrops, they are at relatively high risk, for under such conditions their specialized structures are relatively inappropriate. In this way the environment determines the pattern of survival ...
Chapter 7
... of each trait. Do you think the advantages are greater than the disadvantages? Why or why not? Record your responses in your science journal. ...
... of each trait. Do you think the advantages are greater than the disadvantages? Why or why not? Record your responses in your science journal. ...
Chapter 7
... of each trait. Do you think the advantages are greater than the disadvantages? Why or why not? Record your responses in your science journal. ...
... of each trait. Do you think the advantages are greater than the disadvantages? Why or why not? Record your responses in your science journal. ...
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.