incompatible proteins
21Self-incompatibility in plants — Self incompatibility (SI) is a general name for several genetic mechanisms in angiosperms, which prevent self fertilization and thus encourage outcrossing. In plants with SI, when a pollen grain produced in a plant reaches a stigma of the same… …
22Fungal prions — have been investigated, leading to a deeper understanding of disease forming mammalian prions.Prion like proteins are found naturally in some plants and non mammalian animals. Some of these are not associated with any disease state and may… …
23aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… …
24renal system — ▪ anatomy Introduction in humans (human body), organ system that includes the kidneys, where urine is produced, and the ureters, bladder, and urethra for the passage, storage, and voiding of urine. In many respects the human excretory, or… …
25Plasmid — Figure 1: Illustration of a bacterium with plasmid enclosed showing chromosomal DNA and plasmids. In microbiology and genetics, a plasmid is a DNA molecule that is separate from, and can replicate independently of, the chromosomal DNA …
26Humoral immunity — The Humoral Immune Response (HIR) is the aspect of immunity that is mediated by secreted antibodies (as opposed to cell mediated immunity which involves T lymphocytes) produced in the cells of the B lymphocyte lineage (B cell). Secreted… …
27Historia de la biología — La portada del poema sobre la evolución de Erasmus Darwin The Temple of Nature muestra a una diosa que retira el velo de la naturaleza (en la persona de Artemisa). La alegoría y la metáfora han desempeñado a menudo un papel importante en la… …
28angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction any member of the more than 300,000 species of flowering plants (division Anthophyta) …
29Genetically modified organism — GMO redirects here. For other uses, see GMO (disambiguation). GloFish, the first genetically modified animal to be sold as a pet A genetically modified organism (GMO) or genetically engineered organism (GEO) is an organism whose genetic material… …
30Transfer gene — Transfer operon, commonly called tra operon, or tra genes, are some of the genes necessary for non sexual transfer of genetic material in both gram positive and gram negative bacteria. The tra locus includes the pilin gene and regulatory genes,… …
