Coral reefs

Coral reefs

Coral reefs are structures formed from the calcium carbonate secretions of corals. They are colonies of tiny animals in marine areas containing few nutrients.

Industry: Natural environment

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Coral reefs

Patchy necrosis

Natural environment; Coral reefs

A disease of corals. Colonies with this condition have small (2-10 cm diameter) circular to irregular patches of denuded skeleton that will increase in diameter an additional 1-10 cm over a period of ...

Alternation of generations

Natural environment; Coral reefs

A life cycle in which a multicellular diploid stage is followed by a haploid stage, and so on; found in land plants and many algae and fungi.

Biotype

Natural environment; Coral reefs

A physiological variety or a group of individuals having distinctive genetic characters in common.

Single nucleotide polymorphism (SNP)

Natural environment; Coral reefs

A SNP (pronounced "snip") is a small genetic change, or variation, that can occur within an organism's DNA sequence. The genetic code is specified by the four nucleotides: adenine, cytosine, thymine, ...

Radial cleavage

Natural environment; Coral reefs

A type of cleavage characteristic of deuterostomes. When changing from a four-cell stage to an eight-cell stage embryo, the cells divide such that each cell in the top four cell plane is directly ...