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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. Can we use Ethylene oxide as chemical sterilant? Ethylene oxide: This is considered as the only chemical sterilant while the others are considered merely as disinfectan
polymorphism and its causes
Quick transient responses - Behaviour of Plants Such responses are stimulated by factors showing significant variations over relatively small time period e.g., those showing w
Sucrose, or table sugar, can react with water to produce two other compounds, glucose and fructose. Though, when you add sugar to a glass of water, this reaction proceeds ext
Explain Dual Energy X-ray Absorptiometry (DEXA)? Dual energy X-ray absorptiometry (DEXA) is a relatively new technology that is being identified as a reference method for bo
DEFINITIONS E mbryology - Study of embryo is called as embryology. Zygote to emrbyo in uterus Developmental biology - Study of pre natal period & post natal period
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Why does oxygen concentration in the blood decrease during exercise? Why does carbon dioxide concentration in the blood change during exercise?
ways in which modern agricultural activities may threaten survival species
Four major groups of lipoproteins help in transport of lipids. These include: 1. Chylonzicrons-function is to carry dietary triacylglycerols 2. Very low density lipoprot
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