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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.
Degradation of Ecosystem Ancient man was simple-minded food gatherer and hunter. He looked upon nature with awe and respect and in fact he worshipped it. But from the time he
Atherosclerosis, the most common part of hardening of the arteries, is characterized by the presence of cholesterol-rich arterial thickenings (atheromas). This progressive diseas
Healthy human female X is 25 years old and not pregnant. During the postovulatory phase of X's menstrual cycle, A. there are high blood plasma levels of LH and FSH.
Whenever a pair of alleles has different alleles is there dominance between them? Not in all cases of a gene includes two different alleles is the dominance complete. There are
Surface area The rate of oxidation increases in direct proportion to the surface area of the lipid exposed to air. Furthermore, as surface - volume ratio is increased; a given
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what is the differnce between syndrome and symptom?
Explain Gelation - Function of proteins Gelation refers to the process where denatured molecules aggregate to form an ordered protein network. Proteins can form a well-order
Explain what is Periodontal Condition? If intact attachment apperatus without pocket, time is critical direction toward non-surgical repair to prevent periodontal breakdown
Explain Understanding the response of farmers? Understanding the response of the farmers by the government also influences the food production. Government policy influences the
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