Progenitor

progenitor A precursor, ancestor; one who begets. Origin: L...

Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..

Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

This tutorial describes the role of gibberellin family in plants. Find out the effects of gibberellin on plant growth an..

A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..

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

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