- Industry: Government
- Number of terms: 30456
- Number of blossaries: 0
- Company Profile:
NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A species is an interbreeding natural population that is reproductively isolated from other such groups. Species are usually separated by discontinuities, which constitute barriers that prevent, or at least inhibit, an interspecific gene flow and gene exchange. Establishment of reproductive isolation is essential for development of a new species.
Industry:Natural environment
A unidirectional response of motile cells or organisms in which the direction of movement is affected by the gradient of a diffusible substance.
Industry:Natural environment
One of the external openings communicating with the air tubes (tracheae) or book lungs of certain arthropods; a tubular opening, formed from the modified first gill cleft, communicating with the gill cavity of certain ganoid (e.g., gar pike, bowfin) and all elasmobranch fishes.
Industry:Natural environment
Sexual reproduction involving the fusion of male and female gametes and the formation of a zygote.
Industry:Natural environment
The depth to which significant phytoplankton photosynthesis can take place. It is typically taken to be the depth at which PAR falls to 1 percent of its value just below the surface .
Industry:Natural environment
The study of the relationships between genes and enzymes, specifically the role of genes in controlling the steps in biochemical pathways.
Industry:Natural environment
The UK’s 14 ots are located in practically every geographic region of the world, and are home to unique ecosystems, including rare and globally threatened species, many of which are found nowhere else in the world. The ots are: Turks and the Caicos Islands, Sovereign Base Areas of Akrotiri and Dhekelia, South Georgia and the South Sandwich Islands, Saint Helena, Ascension and Tristan da Cunha, The Pitcairn Islands, Montserrat, Gibraltar, Falkland Islands, Cayman Islands, The British Indian Ocean Territory (BIOT), British Virgin Islands, The British Antarctic Territory, Bermuda, and Anguilla .
Industry:Natural environment
