In this article we will discuss about the mechanisms that decrease and increase genetic variation. Mechanisms that Decrease Genetic Variation: i. Natural Selection: Some types of organisms within a population leave more offspring than others. Over time, the frequency of the more prolific type will increase. The difference in reproductive capability is called natural selection. […]
Mechanisms of Genetic Variation | Evolution | Species | Biology
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Mechanisms of Enzymatic Reactions
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In this article we will discuss about the mechanisms of enzymatic reactions. While studying the kinetics of enzymatic reactions we noted that Michaelis was led to postulate the formation of an intermediate enzyme-substrate complex right at the beginning of this century. What was then only a hypothesis was later largely confirmed and proved. The great […]
7 Main Mechanisms of Phloem Transport in Plants
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The following points highlight the seven main mechanisms of phloem transport in plants. The mechanisms are: 1. Pressure Flow 2. Diffusion 3. Cyclosis 4. Electro-Osmosis 5. Transcellular Streaming 6. Microfibrillar Model 7. Correlation of Structure and Function. Mechanism # 1. Pressure Flow: According to this hypothesis the metabolites transport is a physical phenomenon (Fig. 26-7). The […]
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