Green revolutionAdvances in genetics, petrochemicals, and machinery that culminated in a dramatic increase in crop productivity during the third quarter of the 20th…
Gro-luxäA wide-spectrum fluorescent lamp suitable for artificial light for plant growth.
growth cabinetAn enclosed space in which environmental conditions can be controlled. The degree of control over temperature, light and humidity is a function of the…
growth factor(grohth FAK-ter) A substance made by the body that functions to regulate cell division and cell survival.
Growth FactorsSubstances sometimes given to transplant patients to stimulate the production of blood cells, or to stem cell donors to mobilize stem cells into the…
growth hormoneA protein made by the pituitary gland that helps control body growth and the use of glucose and fat in the body. Also called somatotropin.
growth inhibitorAny substance inhibiting the growth of an organism. The inhibitory effect can range from mild inhibition (growth retardation) to severe inhibition or…
growth phaseEach of the characteristic periods in the growth curve of a bacterial culture, as indicated by the shape of a graph of viable cell number versus time…
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.
GTPAbbreviation for guanosine 5'-triphosphate, a nucleotide which is important as a ligand for G proteins and as a direct precursor molecule for RNA…
guanine(Abbreviation: G). One of the bases found in DNA and RNA. See: guanosine.
Guanine (G)A nitrogenous base, one member of the base pair GC (guanine and cytosine) in DNA. See also: base pair, nucleotide
guanosineThe (ribo)nucleoside resulting from the combination of the base guanine (G) and a D-ribose sugar.
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.
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.
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…
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…