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There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..

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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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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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This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..