Darwin founded a new branch of life science‚ evolutionary biology. Four of his contributions to evolutionary biology are especially important‚ as they held considerable sway beyond that discipline. The first is the nonconstancy of species‚ or the modern conception of evolution itself. The second is the notion of branching evolution‚ implying the common descent of all species of living things on earth from a single unique origin. Many people are familiar with how Darwin came up with the theory of
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EVOLUTIONARY THEORY Evolution is the process in which significant changes in the inheritable traits (genetic makeup) of a species occur over time. The validity and value of evolutionary biology are based on continual analysis and interpretation of accumulating science data. THEORIES OF ORGANIC EVOLUTION • Historically three theories • The views of most modern biologists combine the second and third • No evidence of the first theory‚ that of Lamarck LAMARCK: Inherited Acquired Characteristics
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17 (2008)‚ 2‚ 247-263 Original Scientific Article – UDC – 616.89-008.441.42 159.015.7 Evolutionary Explanations of Eating Disorders Igor Kardum‚ Asmir Gračanin‚ Jasna Hudek-Knežević University of Rijeka‚ Faculty of Arts and Sciences Department of Psychology Abstract This article reviews several most important evolutionary mechanisms that underlie eating disorders. The first part clarifies evolutionary foundations of mental disorders and various mechanisms leading to their development. In
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A central organizing concept in biology is that life changes and develops through evolution‚ and that all life-forms known have a common origin. The theory of evolution postulates that all organisms on the Earth‚ both living and extinct‚ have descended from a common ancestor or an ancestral gene pool. This last universal common ancestor of all organisms is believed to have appeared about 3.5 billion years ago.[21] Biologists generally regard the universality and ubiquity of the genetic code as definitive
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Evolutionary psychologists view human behavior and psychological traits as a result of evolutionary adaptation in response to reproductive needs – much like the concept of natural selection applied to reproduction‚ or sexual selection. Drawing from this perspective‚ evolutionary psychologists and professionals seek to explain the differences between male and female dating and mating rituals and sexual attitudes and how they have evolved throughout the centuries. For example‚ researchers employ the
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Throughout the course of life evolution has taken its place on plants and animals. One of the greatest evolutionary changes was the transition of life in water‚ to the transition to life on land. As you can imagine‚ both organisms had challenges moving from this single cellular water environment to a multi-cellular land environment. While the change was difficult‚ this new environment would help organisms flourish in life‚ giving them the ability to reproduce more freely‚ and eat with less competition
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Theory of Evolutionary Psychology PSY 331 Instructor Malish Jan. 11‚ 2012 The Evolutionary theory of learning is a sub- category of the school of Evolutionary psychology. The study of evolutionary psychology focuses on a combination of sciences‚ evolutionary biology and cognitive psychology‚ anthropology‚ and neuroscience. The basic theory seeks to explain‚ through universal mechanisms‚ why humans act and learn the way they do. EP (evolutionary psychology) theorists attempt to reconstruct early
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Evolutionary (Darwinian) Medicine “Nothing in biology makes sense except in the light of evolution” –Theodosius Dobzhansky Proximate vs. Ultimate Questions Biological causation: proximate vs. ultimate explanations Physiology‚ genetics‚ biochemistry‚ etc. generally concentrate on * proximate causation “What” & “How” questions Ultimate causation: How evolutionary processes (natural selection; adaptation) and evolutionary history shape traits “Why” questions Traits have both types
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The evolutionary approach suggests that our behaviour is determined through natural selection; therefore it is coded into our genes through how we have adapted. It is a biological approach and states nature over nurture. A criticism of this approach is that it is determinist as it suggests that the way we behave is dictated through natural selection‚ for example in gender roles men being strong hunters and wanting a younger female partner. It ignores other suggestions‚ such as how we are brought
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Biology is a natural science concerned with the study of life and living organisms‚ including their structure‚ function‚ growth‚ evolution‚ distribution‚ and taxonomy.[1] Modern biology is a vast and eclectic field‚ composed of many branches and subdisciplines. However‚ despite the broad scope of biology‚ there are certain general and unifying concepts within it that govern all study and research‚ consolidating it into single‚ coherent field. In general‚ biology recognizes the cell as the basic unit
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