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Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

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This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..

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Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

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This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..