Heterogenetic antigen An antigen which is possessed by a variety of different phylogenetically unrelated species; e.g., the various organ-or tissue-specific antigens, the alpha-and beta-crystalline protein of the lens of the eye, and forssman antigen. Synonym: heterophil antigen...
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..
This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..
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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Meet some of New Zealand's unique fauna, including endemic insects, frogs, reptiles, birds, and mammals, and investigate..
Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..
