The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..
Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..
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Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..