- 行业: Government
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A cell process by which a gene is cut into different parts, exons and introns. The exons are the coding region and are put back together to make the gene that is transcribed and translated into a protein.
Industry:Natural environment
A file format created by Adobe, initially to provide a standard form for storing and editing printed publishable documents. Because documents in .pdf format can easily be seen and printed by users on a variety of computer and platform types, they are very common on the World Wide Web.
Industry:Natural environment
A major division of a biological kingdom, consisting of closely- related classes; represents a basic fundamental pattern of organization and, presumably, a common descent.
Industry:Natural environment
A sperm cell; the male reproductive cell; the male gamete.
Industry:Natural environment
A very potent general use pesticide found in the roots and stems of several tropical plants. Jewel vine (Derris spp.), Lacepod (Lonchocarpus spp.), and hoary pea (Tephrosia spp.) Are the more common plants from which rotenone is derived. It used in some countries to kill predatory fishes prior to introducing parent fish for natural spawning or newly hatched fry. As an effective fish biocide, rotenone is also used for collecting fish specimens, and in some areas for fishing, where it is added to the water and the dead and dying fishes are collected as they float to the surface. In fishes, rotenone impedes circulation to the gills, causing asphixiation .
Industry:Natural environment
Having a ph of more than 7. Alkaline solutions are also said to be basic.
Industry:Natural environment
In taxonomy, any one of the original syntypic series remaining after the selection of a lectotype.
Industry:Natural environment
