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gamete
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A mature reproductive cell that is capable of fusing with another gamete of the opposite sex to form a zygote. Male gametes are typically known as sperm and female gametes are typically known as eggs. See also fertilization and zygote.
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GDP
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Gross domestic product.
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GDU
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Genetic diversity unit.
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generalist
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A species that can live in many different habitats and can feed on a number of different organisms. For example, shore crabs on the Pacific coast live in a wide variety of habitats, such as mud, sand, and rock, and feed on everything from algae growing on rocks to invertebrates to detritus. Compare specialist.
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genetic diversity
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The genetic variation that occurs within a population or species. For example, there are several different color dog whelk shells and ochre sea stars. See also biodiversity, ecosystem diversity, and species diversity.
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genotype
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The genetic makeup of an organism. The actual appearance of an individual (the phenotype) depends on the interaction between different forms (or alleles) of genes and between the genotype and the environment. Compare phenotype.
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GESAMP
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Joint Group of Experts on Scientific Aspects of Marine Environmental Protection (United Nations).
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gill arches
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The series of curved, bony structures lying beneath the gill cover of a fish that support the gill rakers and gill filaments.
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gill cover
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The large, flat bone on the side of the head of a fish covering the gills.
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gill rakers
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Knob or comb like projections on the front edge of the gill arch. They serve to protect and clean the gill filaments.
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gillnet
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A net set upright in the water to catch fish by entangling their gills in its mesh.
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GIS
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Geographic information system.
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GLP
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Good laboratory practice.
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GM
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genetically modified.
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GMFMC
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Gulf of Mexico Fishery Management Council.
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GMO
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Genetically modified organism.
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GPS
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Global positioning system.
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GSMFC
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Gulf States Marine Fisheries Commission. Serves as a deliberative body of the Gulf of Mexico coastal states, coordinating the conservation and management of nearshore fishery resources, including marine, shell, and anadromous species.
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