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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.
Q. Fibre requirements for ulcerative colitis? Fibre: Eliminating roughage seems to have a better effect on preventing relapses of the disease. A low residue diet may be given d
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Explain the s1M filament theory of muscle contraction. What is special of "FlavrSavr" variety of tomato? Why is it preferred to its normal native variety? Illustrate a label
Q. Explain Tricuspid regurgitation? Though tricuspid regurgitation is a common valvular abnormality on echocardiography rarely is it due to primary organic disease. Secondar
Practical Points in Preparation of Nursing Care Plan You first review the nursing diagnosis, then assign this priority or the order in which these are to be met. Alo
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Pluripotent SCs : Characterizing more restricted abilities for differentiation.their sources are some celles blastocyst (5-14 days) embroys, so can from over 200 cells types i.e
Insulin promotes muscle glucose uptake and metabolism. In presence of insulin muscle cells take up glucose and use it as a source of energy. Insulin also promotes storage of insuli
What characteristics distinguish fungi from plants? Fungi contain some unicellular forms, but plants do not; most plants are autotrophic, but all fungi are heterotrophic. Fungi
What are the Temporal Factors of Abnormality Given the on going schedule of postnatal neurodevelopment, the age of the child at the time of exposure and the behaviour can have
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