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<h3><span class="mw-headline">Diversity and evolution of organisms</span></h3>
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<div classstyle="thumbinnerwidth: 302px;" styleclass="WIDTH: 302pxthumbinner"><img classheight="148" width="300" src="thumbimagehttp://upload.wikimedia.org/wikipedia/commons/thumb/6/67/Fitness-landscape-cartoon.png/300px-Fitness-landscape-cartoon.png" heightlongdesc="148/wiki/Image:Fitness-landscape-cartoon.png" alt="In population genetics the evolution of a population of organisms is sometimes depicted as if travelling on a fitness landscape. The arrows indicate the preferred flow of a population on the landscape, and the points A, B, and C are local optima. The red ball indicates a population that moves from a very low fitness value to the top of a peak." widthclass="300" longdesc="/wiki/Image:Fitness-landscape-cartoon.png" src="http://upload.wikimedia.org/wikipedia/commons/thumb/6/67/Fitness-landscape-cartoon.png/300px-Fitness-landscape-cartoon.pngthumbimage" />
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In population genetics the evolution of a population of organisms is sometimes depicted as if travelling on a fitness landscape. The arrows indicate the preferred flow of a population on the landscape, and the points A, B, and C are local optima. The red ball indicates a population that moves from a very low fitness value to the top of a peak.</div>
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<p><em>Main <a href="http://webspacehosting.com">web page</a> articles:</em> <strong>Evolutionary biology</strong>, Biodiversity, Botany, Zoology is concerned with the origin and descent of species, as well as their change over time, and includes scientists from many taxonomically-oriented disciplines. For example, it generally involves scientists who have special training in particular organisms such as mammalogy, ornithology, or herpetology, but use those organisms as systems to answer general questions about evolution. Evolutionary biology is mainly based on paleontology, which uses the fossil record to answer questions about the mode and tempo of evolution, as well as the developments in areas such as population genetics and evolutionary theory. In the 1990s, developmental biology re-entered evolutionary biology from its initial exclusion from the modern synthesis through the study of evolutionary developmental biology. Related fields which are often considered part of evolutionary biology are phylogenetics, systematics, and taxonomy.</p>
<p>The two major traditional taxonomically-oriented disciplines are botany and zoology. Botany is the scientific study of plants. Botany covers a wide range of scientific disciplines that study the growth, reproduction, metabolism, development, diseases, and evolution of plant life. Zoology involves the study of animals, including the study of their physiology within the fields of anatomy and embryology. The common genetic and developmental mechanisms of animals and plants is studied in molecular biology, molecular genetics, and developmental biology. The ecology of animals is covered under behavioral ecology and other fields.</p>
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<h3><span class="mw-headline">Taxonomy</span></h3>
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