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Natural selection can therefore mean differential reproduction among members of the sarne gene pool. We earlier said that selection would promote those alleles that give rise to phenotypes that are better adapted to a given environment. In other words, the frequencies of 'such alleles would tend to increase and those of ill-adapted ones would tend to decrease. What we are sayingis that natural selection is a matter of changes in gene frequencies. Differential reproduction has a dual role to perform. One it leads to or maintains adaptations and therefore determines whether individuals of a population or species will survive; and two, it is a process which determines what changes will occur in the frequencies of alleles in a gene pool of sexually reproducing individuals.
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Discuss about xeno-transplanation Most defects / diseases treated by xeno-transplanation are not genetic in origin so the therapy will have no impact on gene pool in terms of c
Q. Etiologic factor of atherosclerosis? Various factors are responsible for atherosclerosis. These include: 1. Hyperlipidemin: Excess circulating fats in blood especially th
Hom o sapiens fossilis (CRO-MAGNO N MAN) - Fossils found from Cro-Magnon, France by Mac Gregor (1868) Replaced Neanderthal man about 35.000 years ago Sharp nose
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Is the ventricle lumen larger during systole or during diastole? Systole is the stage of the cardiac cycle on which the ventricles contract. So the lumen of these chambers is d
Various acute complications of diabetes mellitus are described in this unit. Acute complications develop within a short period of time. These are due to improper treatment of diabe
DIGESTION OF FOOD MATERIALS Digestion, you know, involves the mixing of food, its movement through the digestive tract and chemical breakdown of the large ntolecules of food
What are the most significant inorganic molecular substances for living beings? The most significant inorganic substances for living beings are mineral salts, water, carbon dio
Water is an essential commodity for survival of life on these plants. The circulation of water and moisture between living organism, atmosphere and earth is called as water cycle
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