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Random Sampling

 Sampling Measuring a small portion of something and then making a general statement about the whole thing is known as sampling. Sampling is a process of selecting a number of units for a study in such a way that the units represent the larger group from which they are selected. …

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Ecological Succession

Ecological succession is the process of change in the species structure of an ecological community over time. It is the gradual process by which ecosystems change and develop over time. In this article, Types, Examples, Causes and Varoius models of Ecological Succession will be discussed in detail. Definition Ecological succession …

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Sulphur Cycle & Microbial Role in It

The sulfur cycle is the collection of processes by which sulfur moves between rocks, waterways and living systems. Such biogeochemical cycles are important in geology because they affect many minerals. Biochemical cycles are also important for life because sulfur is an essential element, being a constituent of many proteins and cofactors, and sulfur compounds can be used as oxidants or reductants in …

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Exceptions of Mendelism: Second Law

In this article we will discuss the exceptions of 2nd Law. 2nd law is divided into (i) single recessive epistasis (9:3:4), (ii) Duplicate recessive epistasis (9:7), (iii) Single dominant epistasis-cumulative effect of duplicate genes (9:6:1), (iv) Duplicate gene- one incomplete dominance (12:3:1), (v) Pleiotropism.  To discuss about the topics we …

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Exceptions of Mendelism: First Law

The second topic of second year Fundamental Genetics syllabus is Exceptions of Mendelism. So by the title of the article you may have understood that in this article we are going to discuss Exceptions of Mendelism. In this article we will disscuss 1st law. 1st law is divided into  Incomplete …

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Biogeochemical Cycle ( Part- 2)

[Click here to read ‘Bichemical Cycle (part- 1 )’ ] Threats to the Carbon Cycle Decline in forest growth. Killing of ocean phytoplankton due to rising sea temperatures. Death of forests due to spread of disease and insects. Melting permafrost layer (In geology, permafrost or permafrost soil is soil at or …

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Biogeochemical Cycles (part- 1)

Definition A biogeochemical cycle or nutrient cycle is a pathway by which a chemical element or molecule moves through both biotic (biosphere) and abiotic ( lithosphere, atmosphere, and hydrosphere ) compartments  of  Earth. ★Nutrient cycle involves 2 general phases- The environmental phase – in which the chemical nutrient is present in …

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Adaptation Of Plants

Do you ever notice any cacti in a normal field or pond? Or ever seen any Mango, Jackfruit, or other fruiting trees in the seashore? It’s not to happen. And here comes the fact of adaptation of plants in different habitats. Adaptations are special features that allow a plant or …

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Halophytes: Adaptation in Saline Environment

Plants that survive in the saline condition are known as halophytes. Since halophytes can not easily absorb water, they develop almost all important xerophytic devices for optimum use of water. Habit Majority of halophytes in the tropical and subtropical regions are shrubs (dome-shaped), but a few of them are herbaceous …

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