By Cleveland P. Hickman Jr., Larry S. Roberts, Allan Larson
ISBN-10: 0072349034
ISBN-13: 9780072349030
The 3rd variation of Animal range provides a survey of the animal state with emphasis on range, evolutionary relationships, useful diversifications, and environmental interactions. it's adapted for a one-semester or one-quarter path and is acceptable for either non-science and technological know-how majors.
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An original and provocative thesis on the relationship between development and evolution, with examples drawn from many different animal phyla. Darwin, C. 1859. On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. London, John Murray. There were five subsequent editions by the author. , and J. Moore. 1991. Darwin. Warner Books, New York. An interpretive biography of Charles Darwin. , and J. C. Herron. 2001. Evolutionary analysis, ed.
Beagle. Darwin’s evolutionary theory has five major components. Its most basic proposition is perpetual change, the theory that the world is neither constant nor perpetually cycling but is steadily undergoing irreversible change. The fossil record amply demonstrates perpetual change in continuing fluctuations of animal form and diversity following the Cambrian explosion 600 million years ago. Darwin’s theory of common descent states that all organisms descend from a common ancestor through a branching of genealogical lineages.
Most metazoans are biparental, and reproduction follows a period of organismal growth and maturation. Each new generation begins with a cohort of individuals born at the same time. Of course, individuals of any cohort will not all survive to reproduce. For a population to retain constant size from generation to generation, each adult female must replace herself on average with one daughter that survives to reproduce. If she produces more than one viable female offspring the population will grow; if fewer than one, the population will decline.
Animal Diversity by Cleveland P. Hickman Jr., Larry S. Roberts, Allan Larson
by James
4.2
