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Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

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Chromosomes X and Y and Sex Determination

This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

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Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

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