Gaia - The sum of all the genetic information carried by...

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Gaia A hypothetical superorganism composed of the Earth's four spheres: the biosphere , hydrosphere , lithosphere , and atmosphere . gametes Haploid reproductive cells ( ovum and sperm ). gametophyte The haploid stage of a plant exhibiting alternation of generations , generates gametes by the process of mitosis . ganglia Clusters of neurons that receive and process signals; found in þatworms and earthworms. gap junctions Junctions between the plasma membranes of animal cells that allow communication between the cytoplasm of adjacent cells. gastric pits The folds and grooves into which the stomach lining is arranged. gastrin A hormone produced by the pyloric gland area of the stomach that stimulates the secretion of gastric acids. gastroesophageal sphincter A ring of muscle at the junction of the esophagus and the stomach that remains closed except during swallowing to prevent the stomach contents from entering the esophagus. gene pool
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Unformatted text preview: The sum of all the genetic information carried by members of a population. Note: there is no diving in the deep end of the gene pool! genera Taxonomic subcategories within families (sing.: genus), composed of one or more species. genes Specic segments of DNA that control cell structure and function; the functional units of inheritance. Sequence of DNA bases usually code for a polypeptide sequence of amino acids . gene therapy The insertion of normal or genetically altered genes into cells through the use of recombinant DNA technology ; usually done to replace defective genes as part of the treatment of genetic disorders. genetic code The linear series of nucleotides , read as triplets, that species the sequence of amino acids in proteins. Each triplet species an amino acid, and the same codons are used for the same amino acids in almost all life-forms, an indication of the universal nature of the code....
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