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Adaptive divergence in contiguous populations of Darwin`s Small
Adaptive divergence in contiguous populations of Darwin`s Small

... comparing, within taxa, the divergent morphological adaptations of related species to different environments. Such studies have addressed different evolutionary trait utilities in varying environments, whereby the adaptedness of such traits may be modified by sexual selection involving female choice ...
Document
Document

... If evolution is a car, then natural selection is the engine and mutation is the gas. Although evolutionary change can be driven by several processes, natural selection is almost certainly the main one--and the only one that can adapt organisms to their environment, creating the misleading appearance ...
Two Sets to Build Difference
Two Sets to Build Difference

... The!Galapagos!Islands!provided!the!perfect!environment!for!accelerated!evolution!and! speciation! in! Darwin’s! finches.! The! populations! were! small! and! perhaps! most! importantly,! isolated!from!mainland!South!America.!This!allowed!sexual!reproduction!and!individual!cases! of! mutation! to! in ...
A general model of the relation between phenotypic selection and
A general model of the relation between phenotypic selection and

... exactly counterbalanced by changes in conditions over time, cf. Cooke et al., 1990). Plausible hypotheses concerning the absence of selection response were given. For instance, Price and Liou (1989) argued that apparent selection on clutch size was in fact due to a correlation between the non-herita ...
Biological Aging: Active and Passive Mechanisms Compared
Biological Aging: Active and Passive Mechanisms Compared

... Symptoms of aging (grossly increased incidence of many diseases including cancer, skin and hair conditions, arthritis, cataracts and other sensory deterioration, muscle weakness and other mobility deterioration, etc.) are generally similar between short-lived and long lived mammals. This suggests th ...
Biology 2201 Holy Spirit High School Name: ANSWER KEY Part A
Biology 2201 Holy Spirit High School Name: ANSWER KEY Part A

... 39.) Fish, frogs, and humans are all examples of A) Cnidarians B) Annelids C) Arthropods D) Chordates 40.) A typical characteristic of amphibians is A) a two chambered heart B) cartilaginous skeletons C) the necessity of water for reproduction D) internal fertilzation ...
Fodor `s Bubbe Meise Against Darwinism 1
Fodor `s Bubbe Meise Against Darwinism 1

... though the two traits are coextensive in the batch of marbles. I think the same is true of natural selection. The fact that ‘selection for T ’ is opaque doesn’t mean that selection-for floats free from the facts; the facts, after all, include causal facts. Fodor thinks there are no laws about the sel ...
Evolutionary Biology in 30 Minutes
Evolutionary Biology in 30 Minutes

... machine was gradually built up whose eective working was dependent upon the interlocking ...
Evolution PPT2
Evolution PPT2

... Voyage of the Beagle In 1831, Darwin set sail from England aboard the H.M.S. Beagle for a voyage around the world. ...
EvoDevo and niche construction: building bridges
EvoDevo and niche construction: building bridges

... it still need not follow that development be regarded as evolutionarily inconsequential. In many cases the ‘‘controlling genes’’ may themselves have been selected as a result of development-induced changes in the selective environment (Laland and Sterelny, 2006). For example, it is often assumed tha ...
Chapter 13 PowerPoint File
Chapter 13 PowerPoint File

... • The evolution of pesticide-resistant insects is just one of the ways that evolution affects our lives. ...
Effects of Discourse on High School Students` Conceptual
Effects of Discourse on High School Students` Conceptual

... environment; just like if we had to learn how to live life in hiding or Other underground; the environment initiated a change; their offspring will Alternate improve and adapt to the environment; different species breeding with each other; difficulties with genetic concepts; genes going from recessi ...
Magic traits - Nosil Lab of Evolutionary Biology
Magic traits - Nosil Lab of Evolutionary Biology

... contributes to non-random mating, but that is, at times, in a ‘magic environment’ that subjects it to divergent selection; the magic comes from the trait–environment interaction. Thus, a crucial question emerges: how consistently divergent, through time and across space, must selection be for a trai ...
Chapter 13 PPT
Chapter 13 PPT

... for a particular environment are more likely to survive and reproduce than those less well adapted • Darwin saw natural selection as the basic mechanism of evolution – As a result, the proportion of individuals with favorable characteristics increases ...
Chapter 3: Darwinian Natural Selection
Chapter 3: Darwinian Natural Selection

... fw2.2 gene. Large fruit alleles might have been present as rare variants prior to domestication, or they might have arisen as new mutations in cultivated populations. Because the farmers preferred larger tomatoes, year after year they planted their fields with seeds from the largest fruit of the pre ...
Evolution of Human Lifespan: Past, Future, and Present
Evolution of Human Lifespan: Past, Future, and Present

... R.A. Fisher and J.B.S. Haldane, but only peripherally. The person who did most to articulate this idea verbally was the Nobel Laureate P.B. Medawar, who got it from Haldane over tea at the University of London. The results were two Medawar (1946, 1952) articles, the latter being titled ‘‘An unsolved ...
Perspective Evolution Is an Experiment
Perspective Evolution Is an Experiment

... relatively short 1–2 kb intervals (Remington et al. 2001; Tenaillon et al. 2001). This is important because it implies that a window of low diversity, which is a potential signal of positive selection, is likely to be near a causative adaptive sight. In contrast, a selective sweep in a species with ...
Evolutionary Theory and the Ultimate–Proximate
Evolutionary Theory and the Ultimate–Proximate

... by influencing the reproductive success of other individuals who carry that gene. Hamilton’s contribution (1964, 1970, 1975) was to incorporate these indirect effects into the theory of natural selection. He showed that a gene’s increase in frequency is due not only to the direct fitness effects tha ...
Ch 14
Ch 14

...  Early biological thought did not include the concept of evolution – Pre-Darwinian thought held that all organisms were created simultaneously by God, and that each distinct life-form was permanently fixed and did not change over time – These beliefs were heavily influenced by theology – Plato (427 ...
Charles Darwin`s Origin of Species, directional selection, and the
Charles Darwin`s Origin of Species, directional selection, and the

... it is well established that gradualism is the norm, i.e., Darwin (1859, 1872a) was basically right (Herrada et al. 2008). However, one-step endosymbiotic events have “punctuated” the history of life on Earth, so that novel unicellular body plans emerged in aquatic organisms. The origin of eukaryotic ...
Theoretical perspectives on rapid evolutionary change
Theoretical perspectives on rapid evolutionary change

... is mixed, depending on the phenomenon being modeled. Often, the expected outcome of evolution under strong selection exhibits only minor quantitative discrepancies from what we would predict by increasing the strength of selection in weak selection approximations. In other cases, however, prediction ...
Chapter 15 Evolution
Chapter 15 Evolution

... A. They mean the same thing. B. Evolution works against natural selection. C. Evolution explains how natural selection ...
Chapter 15
Chapter 15

... A. They mean the same thing. B. Evolution works against natural selection. C. Evolution explains how natural selection ...
continued
continued

... 14.1 How Did Evolutionary Thought Develop?  Early biological thought did not include the concept of evolution (continued) – Pre-Darwinian science was heavily influenced by theological ideas, maintaining that all organisms were created simultaneously by God, and that each distinct life-form was per ...
Natural Selection: Descent with Modification
Natural Selection: Descent with Modification

... understood, even if he did not approach the topic in a mathematically disciplined way, that factors such as the size of a population and the rate at which variation appears within it can affect the production of complex adaptations. Similarly, even though they might isolate selection as just one evo ...
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Adaptation

In biology, an adaptation, also called an adaptive trait, is a trait with a current functional role in the life history of an organism that is maintained and evolved by means of natural selection. Adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation. Adaptations enhance the fitness and survival of individuals. Organisms face a succession of environmental challenges as they grow and develop and are equipped with an adaptive plasticity as the phenotype of traits develop in response to the imposed conditions. The developmental norm of reaction for any given trait is essential to the correction of adaptation as it affords a kind of biological insurance or resilience to varying environments.
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