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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.
What is the difference between homozygosity and heterozygosity? Homozygosity happens when an individual has two identical alleles of a gene, for instance, AA or aa. Heterozygos
different type of respiration in animals
Define Components of Total parenteral nutrition? Glucose: Initiated at the rate of 6 mg/kg/min and increased upto 12-1.4 mg/kg/min, but care to be taken to prevent hyperglyce
What are nutritional Care related to Neurological Disorder? Let us then move on to the nutritional care. The important goals of nutritional care are to: prevent further
Non-Ketotic Hyperosmolar Diabetic Coma (NKHDC) is another acute complication of diabetes mellitus. In this condition, the coma (loss of consciousness) is developed due to high blo
Q. Why is it dangerous to talk while eating? If a person talks when eating, food may be inhaled into the lungs. Generally after food is swallowed, it passes into pharynx and th
Differential reinforcement of low response rate (DRL) This is used to encourage low rates of responding. Example: "If you ask me for a potato chip no more than once every 10 mi
What are the main events of the first mitotic period? The first mitotic period is prophase. During prophase the following events happen: migration of each centriole pair (centr
State the term - Aneurysms Aneurysms are vascular dilations resulting from localised defects in the elasticity of a vessel. They can be visualised as balloon like expansions of
A molecule that acts by transferring a phosphate group from an ATP molecule to another molecule would be called: A) hydrolase. B) lipase. C) transferase. D) ligase. E) kinase.
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