Growth phase (curve)The characteristic periods in the growth of a bacterial culture, as indicated by the shape of a graph of viable cell number versus time.
Growth rateA growth rate measures the percentage increase in the value of a variety of markets, companies, or operations.
growth regulatorA synthetic or natural compound that at low concentrations elicits and controls growth responses in a manner similar to hormones.
growth retardantA chemical that selectively interferes with normal hormonal promotion of growth and other physiological processes, but without appreciable toxic effects.
growth ringRings visible in a cross-section of a woody stem, such as a tree trunk. Each ring represents the xylem formed in one year as a result of fluctuating…
growth substanceAny organic substance, other than a nutrient, that is synthesized by plants and regulates growth and development.
guanylic acidSynonym for guanosine monophosphate (abbreviation: GMP), a (ribo)nucleotide containing the.
guard cellSpecialized epidermal cells found in pairs around a stoma. Their function is to control the opening and closing of the stoma through changes in turgor.
Guard gate (emergency)The first gate in a series of flow controls, remaining open while downstream gates or valves are operating.
guide RNAAn RNA molecule that contain sequences that function as a template during RNA editing. See: guide sequence.
guide sequenceAn RNA molecule (or a part of it) which hybridizes with eukaryotic mRNA and aids in the splicing of intron sequences.
Gulf StreamWarm water current extending from the Gulf of Mexico and Florida up the U.S. east coast then east northeast to Iceland and Norway.
GungeSlang for anything in the atmosphere that restricts visibility for storm spotting, such as fog, haze, precipitation (steady rain or drizzle), widespread…
GURTAbbreviation for genetic use restriction technology.
gus geneAn E. coli gene that encodes for production of beta-glucuronidase (GUS). Because this activity is absent in plants, the gene is commonly utilized as a…
Gust(Abbrev. G) - A rapid fluctuation of wind speed with variations of 10 knots or more between peaks and lulls.
Gust FrontThe leading edge of gusty surface winds from thunderstorm downdrafts; sometimes associated with a shelf cloud or roll cloud.
Gustnado(or Gustinado) - [Slang], gust front tornado. A small tornado, usually weak and short-lived, that occurs along the gust front of a thunderstorm.
Guy WireCable use to secure a wind turbine tower to the ground in a safe, stable manner.
GyandromorphOrganisms that have both male and female cells and therefore express both male and female characteristics.
gymnospermA class of plant (e.g. conifers) whose ovules and the seeds into which they develop are borne unprotected, rather than enclosed in ovaries, as are those…
gynandromorphAn individual in which one part of the body is female and another part is male; a sex mosaic.
gynogenesisFemale parthenogenesis : after fertilization of the ovum, the male nucleus is eliminated and the haploid (gynogenetic) individual possesses the maternal…
GypsumA soft mineral composed of hydrated calcium sulfate (CaSO4?2H20); occurs as an evaporite residue from ancient lakes in arid basins (e.g.
Gypsum badlandsBadlands dominated by soils derived from the mineral gypsum (hydrated calcium sulfate).