Catch muscle

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..

Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..

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

Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..

Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

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