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The effect of natural selection on colonies or population favouring one group in preference to other may be referred to as group selection. A group can be the smallest collection of individuals within a population or a colony. Group selection, it must be understood, is distinct from selection among individuals. The fitness of the genotypes between groups may vary within a population. The concept of altruism can be extended to groups as well. A colony consisting of many altruists has better chances of survival than a colony consisting of selfish individuals. Let us take hypothetical situatioii where individuals of a colony, reproduce indiscriminately having no regard for the carrying capacity of the environment. On the other hand, consider a colony of individuals with genes restricting population growth, utilising optimally the food sources of the environment. The selection would essentially favour the latter group and the former may eventually face extinction.
Estimate the molar mass of protein? An aqueous solution of the protein bovine serum albumin, containing 2:00 *10 -2 g of protein per cubic centimeter, has an osmotic pressure
Osmoregulation in Terrestrial Environment Earlier you have learnt about osmoregulation in aquatic environment. In this section, we shall study how the terrestrial animals cop
Explain the Magnesium Deficiency and Toxicity? Deficiency of magnesium is rare for two reasons: frstly, the mineral is widely distributed in the foods, secondly, kidney is able
What is a biome? A biome is a prevailing ecosystem constituted by same biotic and abiotic factors present in one or more regions of the planet.
DISORDER OF SKELETON AND JOINTS - 1 . Sprain - It involves a stretching or tearing of tendons or ligaments. 2. Arthritis - It is infalmation of joints.
Explain Atazanavir Atazanavir (ATV, Reyataz) - Atazanavir (Medical Letter 2003; 45:89) is the first single-agent protease inhibitor with once-daily dosing. In clinical trials
Differentiate between neuropsychologists and neurologists Cooperation among neuroraudiologists, neurologists, and neuropsychologists has already led to the accomplishment of se
Determine the Uni-ocular movements Uni-ocular movements are the movements of one eye studied at a time. That means, when left eye is covered, then movements of uncovere
Q. What are the major human diseases caused by roundworms? The major human diseases caused by nematodes are ancylostomiasis, ascariasis (hookworm infection) and filariasis (com
Are organic solvents like benzene and ether polar or non-polar substances? Benzene and the ethers are molecules without electrically charged portions and therefore they are non
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