Hydra
(Science: organism) genus of freshwater coelenterates (cnidarians). They are small, solitary and only exist in the polyp form, which is a radially symmetrical cylinder that is attached to the substratum at one end and has a mouth surrounded by tentacles at the other. They have considerable powers of regeneration and have been used in studies on positional information in morphogenesis.
Hydra (Science: organism) genus of freshwater coelenterates (cnidarians). They are small, solitary and only exist in the polyp form, which is a radially symmetrical cylinder that is attached to the substratum at one end and has a mouth surrounded by tentacles at the other. They have considerable powers of regeneration and have been used in..
The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..
Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..
According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..
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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Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
