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TREE Journal (Trends in Evolution and Ecology)
... wink in Sexual Selection; while educated, thinking, older women wait to talk to him after his performances, their daughters and granddaughters are at gangsta rap gigs, being exposed to a very different set of views. There is an opportunity here to communicate good science to those who might never th ...
... wink in Sexual Selection; while educated, thinking, older women wait to talk to him after his performances, their daughters and granddaughters are at gangsta rap gigs, being exposed to a very different set of views. There is an opportunity here to communicate good science to those who might never th ...
Phenotypic and genetic changes in life history traits in experimental
... experiments (before and after 3 years of selection) and with molecular analysis (comparing populations after selection). Preliminary results show that individuals in all populations have higher odds to mature after 3 years of selection, but the increase seems higher for fish that experienced positiv ...
... experiments (before and after 3 years of selection) and with molecular analysis (comparing populations after selection). Preliminary results show that individuals in all populations have higher odds to mature after 3 years of selection, but the increase seems higher for fish that experienced positiv ...
Darwin - Integrative Biology
... Progressive adaptation by natural selection is responsible for evolutionary changes within a species. When these changes accumulate, they lead to the creation of new species (see Fig. 22.7). Random genetic variation is sifted by natural selection. Evolutionary change occurs without "goals." Chance ...
... Progressive adaptation by natural selection is responsible for evolutionary changes within a species. When these changes accumulate, they lead to the creation of new species (see Fig. 22.7). Random genetic variation is sifted by natural selection. Evolutionary change occurs without "goals." Chance ...
ch05
... Evolution - Change through time (usually applied to biological organisms). Changes that occur within a species or population from one generation to the next, as parents pass their morphologic, behavioral, and other traits on to their offspring, represent microevolution. ...
... Evolution - Change through time (usually applied to biological organisms). Changes that occur within a species or population from one generation to the next, as parents pass their morphologic, behavioral, and other traits on to their offspring, represent microevolution. ...
Revised Exam 3 Review
... sex; a special case of intraspecific competition or the evolutionary result of the struggle between the individuals of one sex for reproductive access to individuals of the other sex; in males it is expressed in competition for social dominance or for particular resources, or by physical combat; or ...
... sex; a special case of intraspecific competition or the evolutionary result of the struggle between the individuals of one sex for reproductive access to individuals of the other sex; in males it is expressed in competition for social dominance or for particular resources, or by physical combat; or ...
Adaptation
... race will continue to escalate indefinitely. Indeed, most species are probably evolving rapidly just to maintain a given current level of adaptation in the face of a continually deteriorating environment. Still other interactions between species are mutually beneficial, resulting in increased fitnes ...
... race will continue to escalate indefinitely. Indeed, most species are probably evolving rapidly just to maintain a given current level of adaptation in the face of a continually deteriorating environment. Still other interactions between species are mutually beneficial, resulting in increased fitnes ...
Intro to Evolution
... animal species. Have the students list characteristics that vary in humans by looking around the room. Ask the students why variation is important (i.e. differential survival of individuals). Hold up the candy bowl and remaining candies so the students can see. Count the remaining candies and write ...
... animal species. Have the students list characteristics that vary in humans by looking around the room. Ask the students why variation is important (i.e. differential survival of individuals). Hold up the candy bowl and remaining candies so the students can see. Count the remaining candies and write ...
FEMALE-SEXUAL-DYSFUNCTIONS1
... 1. In the past was your level of sexual desire or interest good and satisfying to you? y/n 2. Has there been a decrease in your level of sexual desire or interest? y/n 3. Are you bothered by your decreased level of sexual desire or interest? y/n 4. Would you like your level of sexual desire or inter ...
... 1. In the past was your level of sexual desire or interest good and satisfying to you? y/n 2. Has there been a decrease in your level of sexual desire or interest? y/n 3. Are you bothered by your decreased level of sexual desire or interest? y/n 4. Would you like your level of sexual desire or inter ...
AP Biology Chapter 22. Evolution by Natural Selection AP Biology
... whatever it may amount to, will be smashed." ...
... whatever it may amount to, will be smashed." ...
Program Notes and Libretto Excerpts
... else, much to the despair of his father, a successful doctor in Shrewsbury. But one of Charles’ professors must have sensed some talent for science in the young man as he recommended Darwin to Captain Robert Fitzroy as a suitable ship’s companion for a world-spanning “journey of discovery” on H.M.S. ...
... else, much to the despair of his father, a successful doctor in Shrewsbury. But one of Charles’ professors must have sensed some talent for science in the young man as he recommended Darwin to Captain Robert Fitzroy as a suitable ship’s companion for a world-spanning “journey of discovery” on H.M.S. ...
Intralocus sexual conflict in hermaphroditic animals
... reproductive interests can lead to various types of conflict between the sexes, such as conflict ...
... reproductive interests can lead to various types of conflict between the sexes, such as conflict ...
lecture outline
... ○ The rest are eaten, starved, diseased, unmated, or unable to tolerate physical conditions of the environment, such as salinity or temperature. ...
... ○ The rest are eaten, starved, diseased, unmated, or unable to tolerate physical conditions of the environment, such as salinity or temperature. ...
CHAPTER 22
... ○ The rest are eaten, starved, diseased, unmated, or unable to tolerate physical conditions of the environment, such as salinity or temperature. ...
... ○ The rest are eaten, starved, diseased, unmated, or unable to tolerate physical conditions of the environment, such as salinity or temperature. ...
Intralocus sexual conflict in hermaphroditic animals
... reproductive interests can lead to various types of conflict between the sexes, such as conflict ...
... reproductive interests can lead to various types of conflict between the sexes, such as conflict ...
Ch. 22 - Phillips Scientific Methods
... ○ The rest are eaten, starved, diseased, unmated, or unable to tolerate physical conditions of the environment, such as salinity or temperature. ...
... ○ The rest are eaten, starved, diseased, unmated, or unable to tolerate physical conditions of the environment, such as salinity or temperature. ...
Evolution: Theories put forward to explain the origin of life Theory of
... iii. Australia via south East Asia to which it was at one time connected by land. Presumably the shallowness of the Berring Strait would have made the passage of the animals between the two northern continents a relatively easy matter and it explains the present day similarities between the two faun ...
... iii. Australia via south East Asia to which it was at one time connected by land. Presumably the shallowness of the Berring Strait would have made the passage of the animals between the two northern continents a relatively easy matter and it explains the present day similarities between the two faun ...
evolution Darwin Carolus Linnaeus
... presented to the Linnaean Society of London. • Darwin quickly finished The Origin of Species and published it the next year. • While both Darwin and Wallace developed similar ideas independently, independently, the essence of evolution by natural selection is attributed to Darwin Darwin because he d ...
... presented to the Linnaean Society of London. • Darwin quickly finished The Origin of Species and published it the next year. • While both Darwin and Wallace developed similar ideas independently, independently, the essence of evolution by natural selection is attributed to Darwin Darwin because he d ...
The Evolution of Populations
... increased ability to secure a mate. Select for traits that enhance an individual’s chance of mating Males - increased ability to compete with other males for a mate Females choose to select a male with the best fitness (ability to produce surviving offspring). ...
... increased ability to secure a mate. Select for traits that enhance an individual’s chance of mating Males - increased ability to compete with other males for a mate Females choose to select a male with the best fitness (ability to produce surviving offspring). ...
Darwin article questions
... Read the article through to the bottom of page 55 and answer the questions below. 1. Who, what, when, and where? Who did Darwin make his voyage for? What was the name of the ship? When did Darwin make his voyage? And where did the ship sail to? ...
... Read the article through to the bottom of page 55 and answer the questions below. 1. Who, what, when, and where? Who did Darwin make his voyage for? What was the name of the ship? When did Darwin make his voyage? And where did the ship sail to? ...
Selection on male size, leg length and condition
... 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 the first sighting was counted. Because we searched more frequently and a larger area for males on females’ ...
... 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 the first sighting was counted. Because we searched more frequently and a larger area for males on females’ ...
How does the Hoatzin support Darwin`s theory?
... What did Darwin call the process by which species change? ...
... What did Darwin call the process by which species change? ...
16.1 Darwin`s Voyage of Discovery
... Lamarck’s Evolutionary Hypothesis Jean-Baptiste Lamarck was one of the first scientists to propose hypotheses about how evolution occurred. To explain evolution, Lamarck hypothesized that all organisms have an inborn drive to become more complex and perfect. According to Lamarck, an organism could g ...
... Lamarck’s Evolutionary Hypothesis Jean-Baptiste Lamarck was one of the first scientists to propose hypotheses about how evolution occurred. To explain evolution, Lamarck hypothesized that all organisms have an inborn drive to become more complex and perfect. According to Lamarck, an organism could g ...
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.