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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.
Define Fortification to prevention of iron deficiency anaemia? Food fortification is one of the alternatives that ensure consumption of the nutrient regularly in daily diet. Fo
Which are the plant tissues responsible for the supporting of the plant? The plant supporting tissues are the collenchyma and the sclerenchyma. The collenchyma is made of li
the s phase of interface is important and a cell can newer divide without it justify?
B A TELNU T - Kernel of the betalnut palm, areca catechu, enclosed in betal leaves and mixed with an aromatic paste is chewed extensively in India & Africa. It contains arec
classification on protozoans
Poriferans and cnidarians do not have excretory systems. Do platyhelminthes have an excretory system? Platyhelminthes have a primitive excretory system made of flame cells (als
Q. How do taenias obtain food and make gas exchange? The Tapeworms have sucking and hooks structures on their heads (scolex) that fixate the parasite in the gut wall these stru
Define the Sterilization protocol? Sterilization protocol encompasses the following: 1. Transport of instruments to the sterilization area 2. Cleaning of instruments 3
a) Name two food additives needed to keep food wholesome, and say what they do. b) Name two food additives (or types of additive) which are not necessary for keeping fo
How do leucine zipper binding motifs regulate gene expression?
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