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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.
What is the phototropism? The Phototropism is the movement of plant structures in response to light. The Phototropism may be negative or positive. The Positive phototropism is
male sex organ
Explain the Menopausal symptoms Menopausal symptoms include: (i) hormone-related gynaecological problems that occur around the menopause, and (ii) post-menopausal uterine
Define the Rehabilitation Phase of spinal trauma disease? Once the patient s condition stabilizes, individualized diets need to be recommended, based on the energy and nutrient
Microorganisms Acquired During Transport, Handling and Processing of Raw Foods Microorganisms can come from truck, tanker, food handlers and equipment and utensils used in the
Protein Glycosylation is the reaction in that a carbohydrate, example for a glycosyl donor that is attached to a hydroxyl or other functional set of another molecule a glycosyl acc
What is Oxidation and Reduction? Oxidation and Reduction : Most people are familiar with oxidation as it pertains to the rusting of metals. Oxygen grabs electrons from iron
Under which forms is the Trypanosoma cruzi found in its hosts? In the definitive hosts as well as in triatomine bugs (middle hosts) the protozoan that causes Chagas' disease ch
Toxic agents present in food which interfere with thyroxine synthesis lead to the development of: 1. toxic goitre 2. cretinism 3. simple goitre 4. thyrotoxicosis si
Select all of the correct/true answers. The rate of mutation of a given species can be predicted. Mutations are a source of new alleles and contribute to the biodiversity present o
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