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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.
Photosynthesis Two main energy pathways are recognised in living systems. These are photosynthesis and cellular respiration. Both have their respective but different electron
Explain the Techniques of cardian examination? Examiner should use the fingertips or the part just proximal to them for palpation. The chest should be completely exposed and el
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respiration in animals?
Exercises and ambulation Continue taking all exercises taught in the hospital. Steam inhalation may be continued. Walk on levelled space first, gradually increase the dista
Acute Myocardial Infarction with Haemodynamic Deterioration : These patients may require urgent insertion of intra aortic balloon pump (IABP) followed by PTCA or surgery. 50 per
Zinc (Zn) - Micronutrients In its function in some enzyme systems, zn 2+ resembles Mn 2+ in that it brings about substrate binding and conformational changes in enzymes. A n
Briefly describe about Caramelization? Caramelization results from the action of heat on sugars at about 175º C. At high temperatures, sugars dehydrate, break down and polymeri
Humans produce insulin from certain cells in the pancreas.The insulin gene is isolated from a human pancreas cell and then inserted into a plasmid.The DNA responsible for the synth
Determine the term - coupling factors The coupling factors, also called the F l ATPase, present on the inner mitochondrial membrane facing the matrix side, are a very complex a
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