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- G1, G2, G0
- [phases of cell cycle]
- GABA receptors
- Gage, Phineas
- Galactose
- Galapagos Islands
- Games parasites play
- Gamete
- Haploid reproductive cell which, after fusion with another gamete, forms a zygote. [More]
- Gametophyte
- Haploid, gamete-producing stage in the life cycle of a plant. [Discussion] [in angiosperms] [in ferns] [in mosses]
- Gametophytic self-incompatibility (GSI)
- Gamma aminobutyric acid (GABA) Receptors
- Gancyclovir (also spelled ganciclovir)
- Ganglion
- Small mass of nerve tissue containing the cell bodies of neurons. [sympathetic ganglia]
- Ganglion cells
- [of human retina] [in visual processing]
- Gap junctions
- Gas constant
- Gas exchange
- [in humans] [in other vertebrates] [in insects] [in leaves and stems]
- Gastrin
- Gastropoda
- Gastrulation
- [in frog embryo]
- Gaucher's disease
- G band
- Gel blotting
- Geminin
- Gene conversion
- Gene Drive
- Gene flow
- Gene locus
- Location of a particular gene (or one of its alleles) on a chromosome. [examples]
- Gene pool
- Generator potential
- Genes, reporter
- Gene therapy
- [using retroviral vectors] [using an adeno-associated virus (AAV) vector] [using no vector]
- Genetic code
- Genetic drift
- Genetic mosaics
- Genetic testing
- [sickle-cell disease] [with in vitro fertilization]
- Genome
- A complete haploid set of genes. [genome sizes] [The Human Genome Projects] [mitochondrial] [chloroplast]
- Genotype
- Genetic constitution of an individual.
- Genus
- A taxonomic category that includes (usually) several closely related species. Similar genera are grouped in a family. Humans (Homo sapiens) belong to the genus Homo.
- Geological eras and periods
- Germination
- Resumption of growth of the embryo within a seed, or of a spore. [germination in seeds]
- Germline
- Gerstmann-Sträussler-Scheinker disease (GSS)
- Ghrelin
- giant (gt)
- [role of gene in Drosophila segmentation]
- Gibberellins
- Gibbs, Josiah Willard
- Gill slits
- Paired openings from the pharynx to the exterior that occur in many aquatic chordates when the gill pouches open out at the branchial grooves. [View]
- Girdling
- Glands
- [exocrine] [endocrine]
- Gleevec® (also known as STI571 and imatinib mesylate)
- Glia
- Global warming
- Glomerulus
- Glucagon
- Glucocorticoids
- [Discussion] [receptor bound to response element]
- Gluconeogenesis
- Glucose
- [structure] [homeostatic regulation of]
- Glutamic acid
- [structure] [as neurotransmitter]
- Glutamine
- Glycation
- Glycerol
- Glycine
- [structure] [as neurotransmitter]
- Glycogen
- Glycogenolysis
- Glycolysis
- Glycopeptide antibiotics
- Glycophorin A
- Glycoproteins
- Glycosidic bond
- Glycosylation
- Goiter
- Golgi apparatus
- [Discussion] [in protein kinesis]
- Gonad
- Organ that produces gametes, sperm in males, eggs in females. In humans, the gonads also make sex hormones.
- Gonadotropin-releasing hormone (GnRH)
- Gondwana
- Gonorrhea
- Goodpasture's syndrome
- gp120
- G-protein-coupled receptors (GPCRs)
-
[odor receptors]
[pheromone receptors]
[peptide hormone receptors]
[taste receptors]
[rhodopsin]
[GABAB receptors] [opioid receptors]
[serotonin receptors]
[Ca2+ receptor]
- G proteins
- Grafting (in plants)
- Graft rejection
- [mechanism] [preventing]
- Graft-versus-host disease (GVHD)
- Immune attack against the host mediated by T cells in a transplanted organ or tissue (e.g., bone marrow). [More] [still more]
- Graft-versus-leukemia
- Gram stain
- Grana
- Grant, P. and Rosemary Grant
- Granulocyte
- One of the three types of leukocytes (white blood cells) that contain granules in their cytoplasm. Neutrophils, eosinophils, and basophils are the granulocytes. [More]
- Granulocyte colony-stimulating factor (G-CSF)
- Granzymes
- Grassland biome
- Graves' disease
- Also called thyrotoxicosis. [More]
- Gravitropism
- [mechanism]
- Gray (Gy)
- Gray crescent
- Green algae
- Green fluorescent protein (GFP)
- Greenhouse effect
- Griffith, F.
- Growth
- Increase in the size of an organism, resulting from an increase in its number of cells, their size, the amount of extracellular matrix, or all of these. [human growth hormone]
- Guanine
- Guillardia theta
- Gustducin
- Gymnosperms