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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.
Bilateral - Metazoa Bilaterally symmetrical animals have the major axis running from head (anterior) to tail (posterior). They have a ventral (lower) and dorsal (upper) surfac
Pneumonia Pneumonia is an inflammatory process in which there is consolidation in lung caused by exudates filing the alveolar spaces. Gas exchange cannot take place in the c
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Gametogenesis - Human Development Gametogenesis as you are responsive is the process of formation and development of specialized reproductive cells, ova in females and sperms
The effect of light on the growth of stems (a) Plant some seeds that grow rapidly like as oats, radish, bean or mustard seeds in two flower pots. When the seedlings are about
All Solid Semi-Solid Wastes Arising From Human And Animals Activities, Except Human Excreta And Sullage (Liquid Wastes From Bathrooms, Kitchens Etc.) are discarded as useless or un
Q. Chordate identity card. How are they characterized according to examples of representing beings, type of symmetry, basic morphology, germ layers and coelom, digestive system, ci
#affinities of ctenophora with platyhelmintheson..
Describe the monomer unit of a protein and how monomer units are assembled into peptides.
What are fossil fuels? Fossil fuels, like oil, gas and coal, form when organic material is preserved from the complete action of decomposers, generally buried deep and under pr
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