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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.
African horse sickness African horse sickness (AHS) is a highly fatal insect born viral disease of equidae caused by an Orbivirus (family Reoviridae) and characterized by sever
Anton van Leeuwenhoek was the first to propose placing microorganisms into the Kingdom Monera. True or False
Q. What does the formula DPD = SF - TP signify? DPD is the short form of diffusion pressure deficit, SF (suction force) is the vacuolar osmotic pressure and TP is the turgor pr
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Define Future Projections in the Field of Public Nutrition? We discussed earlier that the field of public nutrition has existed for a long time, although not by this name. A he
Q. Which kind of chemical bond maintains the pairing of each chain in the DNA molecule? To form the DNA molecule, purine bases bind to pyrimidine bases by intermolecular bonds
a) What conditions do most seeds need in order to begin germination? b) What other condition do the seedlings need to continue growth to mature plants? a) Most seed
Q. Which are the two major metabolic gases transported by the blood? The major metabolic gases transported by the blood are molecular carbon dioxide (CO 2 ) and oxygen (O 2 ).
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Unsaturated fatty acids Unsaturated fatty acids are liquid at room temperature and are characterized by having one or more double bonds. Fatty acids having two or more
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