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It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..

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

Chromosome Mutations
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Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..

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Running Water Freshwater Communities

This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..

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Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

The Human Physiology
The Human Physiology

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..