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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.
Arthropods - Regeneration in Invertebrates Among arthropods like insects, crustaceans, centipedes, scorpions and spiders, the capability of regeneration is low or not present.
what are sphaerosomes?
In a red blood cell, which of the following will lead to a reduction in the percentage of hemoglobin that has oxygen bound to it? A. A decrease in the amount of HbRH (Hemoglobi
D i se a se s of Skin Der m a t i t i s Dermatitis is the inflammation of dermis and epidermis resulting in pain on palpation and erythema. E t iolo
Explain Risk evaluation Risk evaluation: The risk evaluation involves: A) identification of a food safety problem B) Establishment of a risk profile C) Ranking of
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What is Pulmonary Artery Banding ? Banding of pulmonary trunk is done to reduce pulmonary flow in a baby. It is seldom done for isolated ventricular septa] defect. Multiple mu
RADIOGRAPHY You have read in GNM courses about radiographical examination. In this text the discussion will be on the following radiographical tests. Chest Roentgenogram
Q Comparing toxicity and the need for dilution in water how different are the uricotelic and ureotelic excretions? What are some examples of animals that present these respective t
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