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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.
Ringworms (cutaneous mycoses) Cutaneous mycoses – also called dermatomycoses, occur worldwide and represent the most common fungal diseases in humans. The dermatophytes are th
Q. What is the embryonic characteristic that evolutionarily makes echinoderms proximal to chordates? Chordates and Echinoderms are deuterostomes that is in their embryonic deve
Alfieri Repair: This is advised for ischaenlic mitral regurgitation. In the area of prolapse, the anterior and posterior leaflet edges are approximated with one or two mattress
What are niches and competitive exclusion?
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PURPOSES OF PATIENT's /CLIENT's RECORDS Following purposes are served by maintaining patient's/client's records: A means of communication. A basis on which therap
Air pollutants - Effects on plants Particulate matter such as cement, coal, petro coke, dust, and fly-ash screen the light and thus change its quantity and quality. Dust plug
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Diarrhoeas disease: Diarrhoeas disease rank among th most leading causes of children's death in developing countries. We shall discuss two main problems in this section i.e.
S p e c i a l Uses Biogas Biogas is an important renewable energy resource for rural areas. Generation of bio-gas from dung and urine is a very simple and cost-effective
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