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Darwin put fort the notion of the survival of the fittest. How do we define 'fittest'? The answer usually given is those who survive. So you can readily see that this is a circular agrument and doesn't really help us understand what really happens following natural selection quite clearly. The idea of fitness as a matter of survival will not do. Therefore in the course of the development of what we have earlier referred to as the modern synthesis the notion of fitness was related to the ability of the individual to maximise the number of progeny left in the next generation. In other words the notion of fitness was translated into reproductive success. Given the idea of fitness as being measurable in terms of reproductive success we can now go back to basic tenets of Darwinism. The first of the five observations mentioned therein was the tendency on the part of living organisms to reproduce: In an exponential manner. We noted that the consequence of this is competition for available resources which results in "the survival of the fittest" Clearly, therefore. in3terms of reproductive ability nature is truly prodigal.
Explian Anthropometric measures Anthropometric measures : It measures growth in children and shows changes in weight in all populations that call reflect diseases an
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Explain the primary function of blood? The primary function of the blood to transport oxygen from the lungs to body tissues for interior respiration. The blood helps in maintai
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How different are gymnosperms from pteridophytes and bryophytes? Gymnosperms are not cryptogamic as pteridophytes and bryophytes are. They are phanerogamic and so they form see
Inter specific Incompatibility This type of incompatibility is characterized by the prevention of fusion of gametes between members of different species. The incompatibility
Explain the types of foods used in Space? The various types of foods are enumerated herewith. Thennostabilized (T): Heat processed foods ("off-the-shelf' items) in aluminium
What are the basic constituents of the cell membrane? The cell membrane is produced of lipids, proteins and carbohydrates. The membrane lipids are phospholipids, a special t
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