Reproductive
... Accessory reproductive organs – ducts, glands, and external genitalia Sex hormones – androgens (males), and estrogens and progesterone (females) Reproductive System Sex hormones play roles in: The development and function of the reproductive organs Sexual behavior and drives The growth and developme ...
... Accessory reproductive organs – ducts, glands, and external genitalia Sex hormones – androgens (males), and estrogens and progesterone (females) Reproductive System Sex hormones play roles in: The development and function of the reproductive organs Sexual behavior and drives The growth and developme ...
Natural Selection and Parallel Speciation in Sympatric Sticklebacks
... glaciers at the end of the Pleistocene. One species of each sympatric pair is a large-bodied Benthic that feeds on invertebrates in the littoral zone; the other species is a smaller, more slender Limnetic that feeds primarily on plankton in open water (12–14). The Benthic and Limnetic from a given l ...
... glaciers at the end of the Pleistocene. One species of each sympatric pair is a large-bodied Benthic that feeds on invertebrates in the littoral zone; the other species is a smaller, more slender Limnetic that feeds primarily on plankton in open water (12–14). The Benthic and Limnetic from a given l ...
TCSS Biology Unit 4 – Evolution Information
... Natural Selection Notes (15.3) - Screen Copy – PPT for lecture covering the principles and types of natural selection. Natural Selection Notes (15.3) - Student Copy – for student handouts. Includes blanks for fill-in that correspond to the bold-faced words in the Screen Copy. Practice/Worksheets: Pe ...
... Natural Selection Notes (15.3) - Screen Copy – PPT for lecture covering the principles and types of natural selection. Natural Selection Notes (15.3) - Student Copy – for student handouts. Includes blanks for fill-in that correspond to the bold-faced words in the Screen Copy. Practice/Worksheets: Pe ...
Bio 1309 DNA as the The Ways of Change
... – Large population size – No movement of individuals and their alleles into or out of the population – Random mating, where each individual has an equal chance of mating with another individual – No natural selection ...
... – Large population size – No movement of individuals and their alleles into or out of the population – Random mating, where each individual has an equal chance of mating with another individual – No natural selection ...
Endless Forms Most Beautiful revolution challenged traditional
... While the ship's crew surveyed the coast, Darwin spent most of his time on shore, observing and collecting thousands of South American plants and animals. He noted the characteristics of plants and animals that made them well suited to such diverse environments as the humid jungles of Brazil. the ex ...
... While the ship's crew surveyed the coast, Darwin spent most of his time on shore, observing and collecting thousands of South American plants and animals. He noted the characteristics of plants and animals that made them well suited to such diverse environments as the humid jungles of Brazil. the ex ...
FEMALE MATE-CHOICE BEHAVIOR AND SYMPATRIC SPECIATION
... genetic model that incorporates the female choice behavior. We are interested in the degree of facilitation of sympatric speciation by various forms of mate choice, not in the various sources of selection and population dynamics that may produce and maintain two newly speciated populations in sympat ...
... genetic model that incorporates the female choice behavior. We are interested in the degree of facilitation of sympatric speciation by various forms of mate choice, not in the various sources of selection and population dynamics that may produce and maintain two newly speciated populations in sympat ...
dar2 - eweb.furman.edu
... C2: Some organisms, as a consequence of their inherited traits, will be more likely to survive and reproduce than others. There will be “differential reproductive success.” C3: Over time, adaptive traits will be passed on in a population at higher frequency than less adaptive traits. These adaptive ...
... C2: Some organisms, as a consequence of their inherited traits, will be more likely to survive and reproduce than others. There will be “differential reproductive success.” C3: Over time, adaptive traits will be passed on in a population at higher frequency than less adaptive traits. These adaptive ...
Influences on Darwin
... These weren’t the only influences on Darwin. He was also aware that humans could breed plants and animals to have useful traits. By selecting which animals were allowed to reproduce, they could change an organism’s traits. The pigeons in Figure 1.1 are good examples. Darwin called this type of chang ...
... These weren’t the only influences on Darwin. He was also aware that humans could breed plants and animals to have useful traits. By selecting which animals were allowed to reproduce, they could change an organism’s traits. The pigeons in Figure 1.1 are good examples. Darwin called this type of chang ...
Ch 14 Evolution
... • Early Biological Thought Did Not Include the Concept of Evolution • Exploration of New Lands: Staggering Diversity of Life ...
... • Early Biological Thought Did Not Include the Concept of Evolution • Exploration of New Lands: Staggering Diversity of Life ...
Fisioterapia em Movimento | Volume 24 | Número 1 | Janeiro/Março
... PF muscles contribute to orgasmic failure. However, it is not clear which aspects of these muscles, such as increased strength, endurance, or other aspects of ...
... PF muscles contribute to orgasmic failure. However, it is not clear which aspects of these muscles, such as increased strength, endurance, or other aspects of ...
genetic differentiation by sexual conflict
... Sexual conflict—a conflict between the evolutionary interests of individuals of the two sexes (Parker 1979, 2006)—occurs when the interests of the sexes differ with regard to certain characteristics of reproduction. For example, male fitness typically increases with mating rate, but a too high matin ...
... Sexual conflict—a conflict between the evolutionary interests of individuals of the two sexes (Parker 1979, 2006)—occurs when the interests of the sexes differ with regard to certain characteristics of reproduction. For example, male fitness typically increases with mating rate, but a too high matin ...
File - LFHS AP Biology
... – 6. In the Action Settings window, make sure the Hyperlink button (to the left of “Hyperlink”) is selected, and in the select box underneath choose “Slide…” – 7. In the Hyperlink to Slide window, scroll down to the appropriate question slide (the original slide number of the question). NOTE: Using ...
... – 6. In the Action Settings window, make sure the Hyperlink button (to the left of “Hyperlink”) is selected, and in the select box underneath choose “Slide…” – 7. In the Hyperlink to Slide window, scroll down to the appropriate question slide (the original slide number of the question). NOTE: Using ...
4 Biology and Sexual Minority Status
... The “prenatal hormonal hypothesis” draws upon observations of rodents in which the balance between male and female patterns of mating behaviors is strongly influenced by the amount and timing of early androgen exposure (Meyer-Bahlburg, 1984; Gooren, 1990; Byne & Parsons, 1993). The period of maximal ...
... The “prenatal hormonal hypothesis” draws upon observations of rodents in which the balance between male and female patterns of mating behaviors is strongly influenced by the amount and timing of early androgen exposure (Meyer-Bahlburg, 1984; Gooren, 1990; Byne & Parsons, 1993). The period of maximal ...
Epilogue - Oxford Academic
... population being uniquely different from all others. We now refer to this type of thinking as population thinking. T o have replaced essentialism by population thinking was one of the greatest conceptual innovations proposed by Darwin. The shift from thinking in terms of an evolutionary change of in ...
... population being uniquely different from all others. We now refer to this type of thinking as population thinking. T o have replaced essentialism by population thinking was one of the greatest conceptual innovations proposed by Darwin. The shift from thinking in terms of an evolutionary change of in ...
Cramer - Southwestern
... of sex and sex-related topics on these shows. The questions addressed here are similar to those Foucault has asked (History of Sexuality 11): What has been said about sexuality? How has sex been put into discourse? What [moral] knowledge has been formed as a result of the power of this discourse? Fo ...
... of sex and sex-related topics on these shows. The questions addressed here are similar to those Foucault has asked (History of Sexuality 11): What has been said about sexuality? How has sex been put into discourse? What [moral] knowledge has been formed as a result of the power of this discourse? Fo ...
Preview as PDF - Pearson Higher Education
... Scottish geologist Charles Lyell. The book presented the case The hypothesis of evolution set forth in The Origin of Species for an ancient Earth sculpted over millions of years by gradual also generated predictions that have been tested and verified geologic processes that continue today. Having wi ...
... Scottish geologist Charles Lyell. The book presented the case The hypothesis of evolution set forth in The Origin of Species for an ancient Earth sculpted over millions of years by gradual also generated predictions that have been tested and verified geologic processes that continue today. Having wi ...
Dynamics of the Emergence of Genetic Resistance to Biocides
... reproduce, had to find a mate i=m such that M(m,1,1)=1 and M(m,8,1)=2. Always allele k=1 was expressed phenotypically, whereas allele k=2 was absent in haploids and in diploids was never expressed phenotypically but could be inherited and eventually expressed as allele k=1 in the offspring. The gene ...
... reproduce, had to find a mate i=m such that M(m,1,1)=1 and M(m,8,1)=2. Always allele k=1 was expressed phenotypically, whereas allele k=2 was absent in haploids and in diploids was never expressed phenotypically but could be inherited and eventually expressed as allele k=1 in the offspring. The gene ...
Using Artificial Selection to Understand Plastic Plant Phenotypes1
... criticisms, a novel study of tobacco, Nicotiana tabacum, combined mutagenesis with artificial selection. Selection targeted variation in CO2 compensation point, G, a measure of the balance between carbon gained through photosynthesis and lost through photoand maintenance respiration. Rather than est ...
... criticisms, a novel study of tobacco, Nicotiana tabacum, combined mutagenesis with artificial selection. Selection targeted variation in CO2 compensation point, G, a measure of the balance between carbon gained through photosynthesis and lost through photoand maintenance respiration. Rather than est ...
History of Charles Darwin (1809
... the Linnean Society in 1858, but it received little attention After which Darwin rushed to publish his book in 1859 ...
... the Linnean Society in 1858, but it received little attention After which Darwin rushed to publish his book in 1859 ...
Therapist-Patient Sex as Sex Abuse: Six Scientific, Professional, and
... Comprehensive Textbook of Psychiatry placed the incidence rate at between 1.1 and 1.9 per million ( Henderson, 1975). Likewise, rape was generally ignored or neglected -Amir (1971) was unable to find even one book devoted exclusively to the topic -- and as late as the early 1970s, rape accusations w ...
... Comprehensive Textbook of Psychiatry placed the incidence rate at between 1.1 and 1.9 per million ( Henderson, 1975). Likewise, rape was generally ignored or neglected -Amir (1971) was unable to find even one book devoted exclusively to the topic -- and as late as the early 1970s, rape accusations w ...
Aalborg Universitet The reason why profitable firms do not necessarily grow
... and entrepreneurship. This paper extends the analysis of economic selection by formalizing tools for empirical analysis of coevolution of multiple characteristics in a population, and by applying these tools in a simple simulation exercise. Economic selection – the increasing predominance of superio ...
... and entrepreneurship. This paper extends the analysis of economic selection by formalizing tools for empirical analysis of coevolution of multiple characteristics in a population, and by applying these tools in a simple simulation exercise. Economic selection – the increasing predominance of superio ...
Descent with Modification: A Darwinian View of Life
... • 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 ...
Weighing the evidence for adaptation at the molecular level
... little attention: sites evolve independently of one another. Given both theoretical and empirical evidence that this assumption is not valid, I argue that estimates of the frequency of adaptive substitution are too unreliable to reject the neutral theory of molecular evolution. Evidence for positive ...
... little attention: sites evolve independently of one another. Given both theoretical and empirical evidence that this assumption is not valid, I argue that estimates of the frequency of adaptive substitution are too unreliable to reject the neutral theory of molecular evolution. Evidence for positive ...
Developmental plasticity and the origin of species differences
... partly to genetic variation and partly to variations in the developmental plasticity of phenotype structure, physiology, and behavior that arise during development and may be influenced by environmental factors, including maternal effects that reflect genetic and environmental variation present in p ...
... partly to genetic variation and partly to variations in the developmental plasticity of phenotype structure, physiology, and behavior that arise during development and may be influenced by environmental factors, including maternal effects that reflect genetic and environmental variation present in p ...
Optimal climbing speed explains the evolution of extreme sexual
... pressures. Nevertheless, the repeated independent evolution of an unusual feature such as extreme size differences between males and females suggests that some common form of selection might be the driving factor. Moya-Laraño et al. (2002) proposed the gravity hypothesis (GH) for the evolution of e ...
... pressures. Nevertheless, the repeated independent evolution of an unusual feature such as extreme size differences between males and females suggests that some common form of selection might be the driving factor. Moya-Laraño et al. (2002) proposed the gravity hypothesis (GH) for the evolution of e ...
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.