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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 Which is the chordate class considered an evidence of the transition of the vertebrates from the aquatic to the dry land environment? The amphibians are totally aquatic in th
what does ICZN stand for
Sutures are also classified by thread diameter: Thread materials range in diameter from 1 to 10 with the higher number corresponding to the thinner, more delicate thread. In
reproductive system of rabbit
Please help with the following: a) Draw a diagram (showing all the C and H atoms, and their bonds) for a hydrocarbon with 5 carbons with a double bond between carbons 2 and 3.
Bomb calorimeter is used to determine the calorific value of solid and liquid fuels. Construction It consists of following parts 1. Stainless steel bomb:
Triple Vessel Disease (TVD) : Patients with triple vessel disease and impaired left ventricular function do badly on medical treatment. They are candidates for CABG. Operation is
Temperature - Aquatic Habitats The water temperature changes less rapidly than the temperature of air because water has a considerably higher specific heat than air, that is l
What is the aim of milling The aim of milling (the process including crushing and grinding) is to obtain preferentially a flour, in which the constituents of the endosperm cell
DEMOGRAPH Y - Scientific study of vital & social statistics such as births, deaths, disease etc. of human population is called demography. It deals with - 1. Change
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