Ch. 13 ppt
... – In the 1960s, the World Health Organization (WHO) began a campaign to eradicate the mosquitoes that transmit malaria. – It used DDT, to which some mosquitoes have evolved resistance. ...
... – In the 1960s, the World Health Organization (WHO) began a campaign to eradicate the mosquitoes that transmit malaria. – It used DDT, to which some mosquitoes have evolved resistance. ...
the program notes - Museum of the Moving Image
... a jump cut to make it appear that Mike has shed his ...
... a jump cut to make it appear that Mike has shed his ...
5 Points of Darwin`s Natural Selection
... More offspring are produced than survive. Babies are being eaten by predatos or starving Those that survive have favorable traits. The grass eating rabbits can eat the others cannot A population will change over time. The population of grass eating bunnies increases and the population of berry/flowe ...
... More offspring are produced than survive. Babies are being eaten by predatos or starving Those that survive have favorable traits. The grass eating rabbits can eat the others cannot A population will change over time. The population of grass eating bunnies increases and the population of berry/flowe ...
Sex and sensibility: The role of social selection
... At the heart of Roughgarden’s book is a two-prong strategy: first, she claims that modern sexual selection theory must be rejected; second, she proposes an alternative framework, social selection, to explain the evolution of sexual diversity in the animal kingdom. In many ways, her dismissal of sexu ...
... At the heart of Roughgarden’s book is a two-prong strategy: first, she claims that modern sexual selection theory must be rejected; second, she proposes an alternative framework, social selection, to explain the evolution of sexual diversity in the animal kingdom. In many ways, her dismissal of sexu ...
Individual Differences in Nucleus Accumbens Activity to Food and
... to predict sexual desire (as indexed by the SDI: solitary sexual desire, which measures interest in behaving sexually by oneself, and dyadic sexual desire, which measures interest in behaving sexually with a partner) (Spector et al., 1996). Left NAcc activity in response to viewing sexual scenes was ...
... to predict sexual desire (as indexed by the SDI: solitary sexual desire, which measures interest in behaving sexually by oneself, and dyadic sexual desire, which measures interest in behaving sexually with a partner) (Spector et al., 1996). Left NAcc activity in response to viewing sexual scenes was ...
Sex Differences and Defects Menstruation Circumcision
... as women. • Female impersonators are men who dress as women, often as part of an entertainment job. Transvestite fetishism refers to a heterosexual man who dresses in female clothing to produce or enhance sexual arousal. • Transvestism is almost exclusively a male sexual variation and is essentially ...
... as women. • Female impersonators are men who dress as women, often as part of an entertainment job. Transvestite fetishism refers to a heterosexual man who dresses in female clothing to produce or enhance sexual arousal. • Transvestism is almost exclusively a male sexual variation and is essentially ...
W i
... Why is sex ratio about even (1:1) in many species of animals? This is quite a puzzle: • From a group-selectionist perspective we might expect that a female-biased sex ratio would be advantageous because such a population could grow more rapidly • From a individual selection perspective why should a ...
... Why is sex ratio about even (1:1) in many species of animals? This is quite a puzzle: • From a group-selectionist perspective we might expect that a female-biased sex ratio would be advantageous because such a population could grow more rapidly • From a individual selection perspective why should a ...
Analysis and critique of the concept of Natural Selection (and of the
... would allow it to explore, even if not very effectively at first, some new way of life. Such unexpected potential utilities would be an unavoidable property of any complex system. Providing that environmental changes make such a new way of life possible, and providing that no other populations are w ...
... would allow it to explore, even if not very effectively at first, some new way of life. Such unexpected potential utilities would be an unavoidable property of any complex system. Providing that environmental changes make such a new way of life possible, and providing that no other populations are w ...
Recent advances in understanding of the
... means to create novel genotypes (putting mutant alleles that may have initially arisen in different individuals into one individual at the same or at different loci) (see Refs 14 and 15). A second and related advantage has to do with the observation that, in the absence of mutation, sexual populatio ...
... means to create novel genotypes (putting mutant alleles that may have initially arisen in different individuals into one individual at the same or at different loci) (see Refs 14 and 15). A second and related advantage has to do with the observation that, in the absence of mutation, sexual populatio ...
Selection and inheritance of sexually dimorphic juvenile plumage
... Funding Information No funding information provided. ...
... Funding Information No funding information provided. ...
IS IT SEXUAL MISCONDUCT?: Educational Scenarios
... couple of days. Then, Riley starts to get missed calls from private numbers at all hours of the day and night. Riley is starting to get scared. A mutual friend tells Riley that Mischa told them they are the one who created the fake Facebook profile. Is Mischa’s behavior a violation of the Sexual Mi ...
... couple of days. Then, Riley starts to get missed calls from private numbers at all hours of the day and night. Riley is starting to get scared. A mutual friend tells Riley that Mischa told them they are the one who created the fake Facebook profile. Is Mischa’s behavior a violation of the Sexual Mi ...
EEB 2245 Evolutionary Biology Spring 2015 Problem Set 2
... 4. Many vertebrates living in groups emit alarm calls to warn other individuals of approaching predators. However, the alarm call also attracts the predator’s attention, making the individual producing the a ...
... 4. Many vertebrates living in groups emit alarm calls to warn other individuals of approaching predators. However, the alarm call also attracts the predator’s attention, making the individual producing the a ...
Review Kin Selection versus Sexual Selection: Why the Ends Do
... Cooperative breeding: A form of social organisation characterised by cooperative brood care, usually between one or both parental breeders and one to several offspring helpers, but without any of them having fixed caste characteristics. Eusociality: An advanced state of social organization character ...
... Cooperative breeding: A form of social organisation characterised by cooperative brood care, usually between one or both parental breeders and one to several offspring helpers, but without any of them having fixed caste characteristics. Eusociality: An advanced state of social organization character ...
Genomic conflicts and sexual antagonism in human health
... review is that data collection focused on (i) effects of imprinted genes that modulate the oxytocin system, and (ii) effects of sexually antagonistic alleles on sexdimorphic, disease-related phenotypes will lead to novel insights into both human health and the evolutionary dynamics of genomic confli ...
... review is that data collection focused on (i) effects of imprinted genes that modulate the oxytocin system, and (ii) effects of sexually antagonistic alleles on sexdimorphic, disease-related phenotypes will lead to novel insights into both human health and the evolutionary dynamics of genomic confli ...
Diff. Biology Study Guide: Evolution Key Terms 1. Biological
... geology is not cosmogony, but must confine itself to the study of the materials of the earth; that everywhere evidence may be seen that the present rocks of the earth's surface have been in great part formed out of the waste of older rocks; that these materials having been laid down under the sea we ...
... geology is not cosmogony, but must confine itself to the study of the materials of the earth; that everywhere evidence may be seen that the present rocks of the earth's surface have been in great part formed out of the waste of older rocks; that these materials having been laid down under the sea we ...
L18Selection
... remove variation - because only the fittest survive! This is mostly true, but not exactly. 1) Negative selection always reduces genetic variation, plain and simple - that is why it is also called purifying selection. ...
... remove variation - because only the fittest survive! This is mostly true, but not exactly. 1) Negative selection always reduces genetic variation, plain and simple - that is why it is also called purifying selection. ...
evolution practice test
... ____ 10. Which of the following was NOT one of Darwin's observations? a. Most individuals have an equal chance to survive and reproduce. b. Changes in organisms were gradual and took place over long periods of time. c. Members of the same species may exhibit considerable variation. d. Some character ...
... ____ 10. Which of the following was NOT one of Darwin's observations? a. Most individuals have an equal chance to survive and reproduce. b. Changes in organisms were gradual and took place over long periods of time. c. Members of the same species may exhibit considerable variation. d. Some character ...
evolution
... The first steps of speciation have been produced in several laboratory experiments involving “geographic” isolation. For example, Diane Dodd took fruit flies from a single population and divided them into separate populations living in different cages to simulate geographic isolation. Half of the po ...
... The first steps of speciation have been produced in several laboratory experiments involving “geographic” isolation. For example, Diane Dodd took fruit flies from a single population and divided them into separate populations living in different cages to simulate geographic isolation. Half of the po ...
Natural Selection
... their understanding of natural selection. The work at GCSE will help the learners develop their understanding of these concepts further. The style of examination questions at GCSE may require learners to apply their knowledge of natural selection in a similar way. There may be some simple recall que ...
... their understanding of natural selection. The work at GCSE will help the learners develop their understanding of these concepts further. The style of examination questions at GCSE may require learners to apply their knowledge of natural selection in a similar way. There may be some simple recall que ...
Evolution Notes
... meat does not turn into flies. • He observed these flasks to see in which one(s) maggots would ...
... meat does not turn into flies. • He observed these flasks to see in which one(s) maggots would ...
Full text
... gest that the “other factor” resulting in these corresponding structures could be a form of sexual selection, specifically sexual conflict. It is reasonable to assume that the lock-andkey hypothesis is important in some groups but cannot be universally applied (Eberhard 1985, Shapiro & Porter 1989). ...
... gest that the “other factor” resulting in these corresponding structures could be a form of sexual selection, specifically sexual conflict. It is reasonable to assume that the lock-andkey hypothesis is important in some groups but cannot be universally applied (Eberhard 1985, Shapiro & Porter 1989). ...
substance use and sexual dysfunction
... than 3 standard units of alcohol (12g of ethanol).6Chronic and persistent alcohol use is known to induce sexual dysfunction which leads to marked distress and interpersonal difficulty. This in turn worsens the alcohol abuse and hence a vicious cycle sets in. Sexual dysfunction in persons abusing alc ...
... than 3 standard units of alcohol (12g of ethanol).6Chronic and persistent alcohol use is known to induce sexual dysfunction which leads to marked distress and interpersonal difficulty. This in turn worsens the alcohol abuse and hence a vicious cycle sets in. Sexual dysfunction in persons abusing alc ...
DOT-MARAD sexual assault response strategy
... Do DOT and MARAD have specific data and empirical evidence to support their belief that merchant mariners on commercial ships pose direct physical or psychological threats to Kings Point midshipmen while mariners on government vessels do not? If so, they ought to make such data and evidence availabl ...
... Do DOT and MARAD have specific data and empirical evidence to support their belief that merchant mariners on commercial ships pose direct physical or psychological threats to Kings Point midshipmen while mariners on government vessels do not? If so, they ought to make such data and evidence availabl ...
sexually transmitted disease and the evolution of mating
... Susceptibility to disease has featured prominently in research of sexual selection ever since Hamilton and Zuk (1982) proposed their hypothesis on female choice for healthy, resistant males. If males vary in their resistance to pathogens or parasites, females should be able to use sexual signals as ...
... Susceptibility to disease has featured prominently in research of sexual selection ever since Hamilton and Zuk (1982) proposed their hypothesis on female choice for healthy, resistant males. If males vary in their resistance to pathogens or parasites, females should be able to use sexual signals as ...
Sexual segregation in ungulates: a comparative test of three
... ABSTRACT In most social ungulate species, males are larger than females and the sexes live in separate groups outside the breeding season. It is important for our understanding of the evolution of sociality to find out why sexual segregation is so widespread not only in ungulates but also in other m ...
... ABSTRACT In most social ungulate species, males are larger than females and the sexes live in separate groups outside the breeding season. It is important for our understanding of the evolution of sociality to find out why sexual segregation is so widespread not only in ungulates but also in other m ...
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.