By Sehoya H. Cotner, Randy Moore
Arguing for Evolution: An Encyclopedia for figuring out technological know-how offers readers with a unmarried resource for the medical facts helping evolution. The booklet indicates how scientists have validated the predictions of evolutionary concept and created an unshakeable starting place of proof helping its fact. As such, it demonstrates how evolution serves as a case research for realizing the medical approach and provides a logical version for medical inquiry.The facts for evolution is gifted traditionally and topically in an available, example-rich, and logical structure, utilizing an arsenal of examples that is going past the common textbook topic. The chapters are established round a chain of hypotheses that the authors placed to the try out, accumulating facts on fossils, comparative anatomy, molecules, and evolutionary biology that allows you to finish that evolution is clinical truth. studying approximately this attention-grabbing box is improved via "see for your self" examples that come with unique facts and figures from key historic and modern papers in evolutionary biology.
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Extra info for Arguing for Evolution: An Encyclopedia for Understanding Science
These products of evolution pose an increasingly serious public health concern. For example, every year in the United States, MRSA kills more than 20,000 people, a number that exceeds the deaths caused by HIV/AIDS. , the introduction of the antibiotics). The antibiotic does not cause resistance to appear; that occurs spontaneously. Moreover, the appearance of resistance is neither good nor bad—certain bacteria are favored only because of the presence of the antibiotic. As evolution would predict, the most resistance is found in places such as hospitals, where antibiotics are used intensively.
Random changes in genetic frequencies can occur in a population, a type of evolution known as genetic drift. , as with endangered species), in which by chance some individuals do not reproduce. By definition this type of evolution is not a result of environmental pressures. Migratory events often produce genetic changes, either in the parent population, the population on the move, or the new, target population. Evolution that occurs when individuals move, taking their alleles with them to a new population, is known as gene flow.
Adaptation and Natural Selection Any feature that confers a benefit on an individual in its present environment is considered adaptive, and is referred to as an adaptation. On average, individuals with this feature are more likely to survive and reproduce than are unaffected members of the population. If the adaptation is inherited, then we would expect affected individuals to survive and pass the feature to their offspring in greater numbers than those who are unaffected. Natural selection refers to adaptive evolutionary change that occurs when some heritable genetic variants—that is, adaptations—confer a survival and reproductive benefit that, in turn, alters a population’s genetic structure.
Arguing for Evolution: An Encyclopedia for Understanding Science by Sehoya H. Cotner, Randy Moore