evolution-webquest
... to another. Gene flow includes lots of different kinds of events, such as _________________ being blown to a new destination or people moving to new cities or countries. If ______________ are carried to a population where those genes previously did not __________________, ____________________ can be ...
... to another. Gene flow includes lots of different kinds of events, such as _________________ being blown to a new destination or people moving to new cities or countries. If ______________ are carried to a population where those genes previously did not __________________, ____________________ can be ...
Variability and Natural Selection in Populations of Wood Lice
... variation in the size, shape, color and firmness of apples in a grocery store bin. Nevertheless, if you were to describe apples to a friend who had never seen one before, you might describe one that had a size, shape, color, and firmness that were not particularly extreme but which you felt best rep ...
... variation in the size, shape, color and firmness of apples in a grocery store bin. Nevertheless, if you were to describe apples to a friend who had never seen one before, you might describe one that had a size, shape, color, and firmness that were not particularly extreme but which you felt best rep ...
Ch 19
... Natural selection is a process in which individuals with favorable inherited traits are more likely to survive and reproduce In 1844, Darwin wrote an essay on natural selection as the mechanism of descent with modification In June 1858, Darwin received a manuscript from Alfred Russell Wallace ...
... Natural selection is a process in which individuals with favorable inherited traits are more likely to survive and reproduce In 1844, Darwin wrote an essay on natural selection as the mechanism of descent with modification In June 1858, Darwin received a manuscript from Alfred Russell Wallace ...
Adaptive Landscape - University of Arizona | Ecology and
... They differ on the relative importance of the other forces of evolution. Wright believed genetic drift and gene flow were more important; Fisher believed mutation was more important. Some more definitions: ...
... They differ on the relative importance of the other forces of evolution. Wright believed genetic drift and gene flow were more important; Fisher believed mutation was more important. Some more definitions: ...
Chapter 23
... • Population geneticists measure polymorphisms in a population by determining the amount of heterozygosity at the geneetic & molecular levels • Average heterozygosity measures the average % of loci that are heterozygous in a population • For ex: Drosophila is heterzygous at ~14% of its loci (so the ...
... • Population geneticists measure polymorphisms in a population by determining the amount of heterozygosity at the geneetic & molecular levels • Average heterozygosity measures the average % of loci that are heterozygous in a population • For ex: Drosophila is heterzygous at ~14% of its loci (so the ...
Ecology and Evolution of the Enigmatic Eclectus Parrot
... paternity can outweigh the costs.14–16 In others, space use can differ between the sexes, with variable mating systems arising depending on the extent of overlap of male and female territories.17–19 In both circumstances, the mating system can become polygynandrous if the males mate with additional ...
... paternity can outweigh the costs.14–16 In others, space use can differ between the sexes, with variable mating systems arising depending on the extent of overlap of male and female territories.17–19 In both circumstances, the mating system can become polygynandrous if the males mate with additional ...
16.2_Ideas_that_Shaped_Darwin_s_Thinking
... Darwin wasn’t the first to suggest species could change over time His grandfather Erasmus Patrick Mathew came up with ideas of Natural Selection in 1831 Published in “Naval Timber and Arboriculture” “Anyhow one may be excused in not having discovered the fact in a work on ‘Naval Timber’” ...
... Darwin wasn’t the first to suggest species could change over time His grandfather Erasmus Patrick Mathew came up with ideas of Natural Selection in 1831 Published in “Naval Timber and Arboriculture” “Anyhow one may be excused in not having discovered the fact in a work on ‘Naval Timber’” ...
Mutual Mate Choice Models as the Red Pill in
... it. At this basic pedagogical level, SWT are correct that EP overemphasizes MCFC logic and sex differences, and we have not yet figured out how to teach the combination of MMC and MCFC that would best introduce our students to the complexities of human mating. Likewise, when we talk with science jou ...
... it. At this basic pedagogical level, SWT are correct that EP overemphasizes MCFC logic and sex differences, and we have not yet figured out how to teach the combination of MMC and MCFC that would best introduce our students to the complexities of human mating. Likewise, when we talk with science jou ...
Photo by “davemee” flickr creative commons
... or impressions of organisms from the past, mineralized in sedimentary rocks. – Sedimentary rocks form when mud and sand settle to the bottom of seas, lakes, and marshes. – New layers of sediment cover older ones, creating layers of ...
... or impressions of organisms from the past, mineralized in sedimentary rocks. – Sedimentary rocks form when mud and sand settle to the bottom of seas, lakes, and marshes. – New layers of sediment cover older ones, creating layers of ...
From Fear to Intimacy - Sexuality Part 1 Feb
... God’s View of our Sex Lives “Let your fountain be blessed, and rejoice in the wife of your youth, a lovely deer, a graceful doe. Let her breasts fill you at all times with delight; be intoxicated always in her love” (Prov 5:18-19) “Let him kiss me with the kisses of his mouth! For your love is ...
... God’s View of our Sex Lives “Let your fountain be blessed, and rejoice in the wife of your youth, a lovely deer, a graceful doe. Let her breasts fill you at all times with delight; be intoxicated always in her love” (Prov 5:18-19) “Let him kiss me with the kisses of his mouth! For your love is ...
Life in the Ocean
... development of niches & resource partitioning migration development of physical barriers ► populations ...
... development of niches & resource partitioning migration development of physical barriers ► populations ...
Theory of Natural Selection
... How could the evolution of the giraffe’s neck be explained by the Theories of Darwin and Lamarck? Lamarck: Ancestors of the modern giraffe had a short neck. When grass was scarce, they ate the leaves from lower branches of trees, stripping bare these branches. The animals of one generation stretche ...
... How could the evolution of the giraffe’s neck be explained by the Theories of Darwin and Lamarck? Lamarck: Ancestors of the modern giraffe had a short neck. When grass was scarce, they ate the leaves from lower branches of trees, stripping bare these branches. The animals of one generation stretche ...
Name - MsOttoliniBiology
... Peppered Moths: There are two forms of peppered moth, light and dark. Before the Industrial Revolution, light moths survived and reproduced more effectively. After the Industrial Revolution, dark moths survived and reproduced more effectively. Why was this the case? ...
... Peppered Moths: There are two forms of peppered moth, light and dark. Before the Industrial Revolution, light moths survived and reproduced more effectively. After the Industrial Revolution, dark moths survived and reproduced more effectively. Why was this the case? ...
Darwin`s Theory of Evolution
... – The same groups of embryonic cells develop in the same order and in similar patterns to produce the tissues and organs of all vertebrates. ...
... – The same groups of embryonic cells develop in the same order and in similar patterns to produce the tissues and organs of all vertebrates. ...
A Closer Look at Natural Selection as the Mechanism of Adaptive
... 4. Sexual selection may lead to pronounced secondary differences between the sexes • Males and females of a species differ not only in their reproductive organs, but often also in secondary sexual characteristics that are not directly associated with reproduction. • These differences, termed sexual ...
... 4. Sexual selection may lead to pronounced secondary differences between the sexes • Males and females of a species differ not only in their reproductive organs, but often also in secondary sexual characteristics that are not directly associated with reproduction. • These differences, termed sexual ...
Organismal Biology/23D-ClosrLookNaturalSelect
... 4. Sexual selection may lead to pronounced secondary differences between the sexes • Males and females of a species differ not only in their reproductive organs, but often also in secondary sexual characteristics that are not directly associated with reproduction. • These differences, termed sexual ...
... 4. Sexual selection may lead to pronounced secondary differences between the sexes • Males and females of a species differ not only in their reproductive organs, but often also in secondary sexual characteristics that are not directly associated with reproduction. • These differences, termed sexual ...
Organic Evolution
... barrier, habitat isolation, behavioral isolation, mechanical isolation, gametic isolation, hybrid inviability, hybrid sterility, hybrid breakdown, speciation, allopatric speciation, sympatric speciation, polyploidy, adaptive radiation, ...
... barrier, habitat isolation, behavioral isolation, mechanical isolation, gametic isolation, hybrid inviability, hybrid sterility, hybrid breakdown, speciation, allopatric speciation, sympatric speciation, polyploidy, adaptive radiation, ...
The ecology of sexual conflict: ecologically dependent parallel
... and females are not aligned, generating sex-specific selection on shared traits such as mating rate (Parker 1979). When the genetic basis of the trait differs between the sexes, sexually antagonistic coevolution can favour loci that enhance a male’s reproductive success relative to intrasexual compe ...
... and females are not aligned, generating sex-specific selection on shared traits such as mating rate (Parker 1979). When the genetic basis of the trait differs between the sexes, sexually antagonistic coevolution can favour loci that enhance a male’s reproductive success relative to intrasexual compe ...
Chapter 22 Descent with Modification: A Darwinian View of Life
... Inheritance of acquired characteristics ...
... Inheritance of acquired characteristics ...
Chapter 22 Descent with Modification: A Darwinian View of Life
... Inheritance of acquired characteristics ...
... Inheritance of acquired characteristics ...
Chapter 1 Lecture Notes—an introduction to Biology
... – Others had the pieces of the puzzle, but Darwin could see how they fit together ...
... – Others had the pieces of the puzzle, but Darwin could see how they fit together ...
Evolution Notes
... • Evolution - modern organisms have descended from ancient organisms (change over time) • Theory - a well-supported, testable explanation of phenomena that have occurred in the natural world ...
... • Evolution - modern organisms have descended from ancient organisms (change over time) • Theory - a well-supported, testable explanation of phenomena that have occurred in the natural world ...
Evolution ppt notes_COMPLETE PACKET
... What if the environment changes? If they _____ _______ have the traits (genes) that enable them to survive…they die, and ___ ______ reproduce. If they do have the traits, then they ____________…and reproduce. SO… the next generation has ____________ of the “fit” traits for _____________ environm ...
... What if the environment changes? If they _____ _______ have the traits (genes) that enable them to survive…they die, and ___ ______ reproduce. If they do have the traits, then they ____________…and reproduce. SO… the next generation has ____________ of the “fit” traits for _____________ environm ...
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.