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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.
An ecosystem is a self sufficient interacting system in the biosphere. Eg. forest, desert, pond etc. almost, all the ecosystem have more or less similar fundamental plan for their
Explain some Medical Considerations during Breastfeeding? Let us look into some special concerns during breastfeeding that might be useful to you as a dietitian. Medical Con
Q. Moniliasis is one of the most common opportunistic diseases in AIDS. What is the etiological agent of moniliasis and what is the other name of the disease? Why is monilia also c
mitochondria?
economic importance of the phylum protozoa
Vitamins differ from minerals in that vitamins are compounds, and not elements. Vitamins do not help form bodily structures and thus are needed strictly in small quantities-sometim
Explain the term Ferns? Ferns are plants that have vessels that conduct water, minerals, and nutrients, and reproduce through spores, rather than seeds. Ferns are therefore o
What are the Haversian canals and the Volkmann's canals of the bones? Is the osseous tissue vascularized? The Haversian canals are longitudinal canals show in the osseous tissu
How different are reptiles and birds concerning the maintenance of body temperature? Are birds rare in polar regions? Reptiles are heterothermic, i.e., they do not control thei
Q. Explain Bruce Protocol? Bicycle Ergometry Most bicycle test are performed sitting upright, but supine bicycle test have become more popular. Treadmill Test The
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