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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
The condition of having an abnormal number of chromosomes; a chromosome number that is not an exact multiple of the haploid number.
Industry:Natural environment
The normal structural configuration of DNA consisting of two helices winding about the same axis. The structure of DNA was first proposed by Watson and Crick (1953) with two interlocking helices joined by hydrogen bonds between paired bases .
Industry:Natural environment
The stages from egg to juvenile in fish development.
Industry:Natural environment
A depression formed in an area either by dissolving of the surface limestone or by collapse of underlying cavities.
Industry:Natural environment
A large water-circulation system of geostrophic currents rotating clockwise in the Northern Hemisphere or counterclockwise in the Southern Hemisphere.
Industry:Natural environment
A small lateral branchlet on a tentacle of an octocorallian (soft coral); the most visible portion of the outer ear of mammals.
Industry:Natural environment
An egg cell in which the total amount of yolk is small and the yolk granules are fairly uniformly distibuted throughout the cytoplasm, and cleavage completely bisects the cell, e.g., the egg of a starfish. A synonym is "homolecithal".
Industry:Natural environment
