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General
General nature or nature terms.
Industry: Natural environment
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General
Abiogenesis
Biology; General
Early theory that held that some organisms originated from nonliving material.
Asymmetrical
Biology; General
In animals, a term referring to organisms that lack a general body plan or axis of symmetry that divides the body into mirror-image halves.
Abnormal haemoglobin
Biology; General
Haemoglobin molecule with a different shape due to an altered amino acid sequence (ultimately caused by an altered DNA base sequence), such as in the inherited disease sickle-cell anemia.
Abscisic acid
Biology; General
A plant hormone that promotes dormancy in perennial plants and causes rapid closure of leaf stomata when a leaf begins to wilt.
Absolute time
Biology; General
One of the two types of geologic time (relative time being the other), with a definite age date established mostly by the decay of radioactive elements, although ages may also be obtained by counting ...
Amino acid sequence
Biology; General
Also known as the primary structure of a protein/polypeptide; the sequence of amino acids in a protein/polypeptide controlled by the sequence of DNA bases.