dna modification
71Methylation — In the chemical sciences, methylation denotes the addition of a methyl group to a substrate or the substitution of an atom or group by a methyl group. Methylation is a form of alkylation with, to be specific, a methyl group, rather than a larger… …
72Evolution — This article is about evolution in biology. For other uses, see Evolution (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to evolution. Part of a series on …
73Histone — In biology, histones are the chief protein components of chromatin. They act as spools around which DNA winds, and they play a role in gene regulation. Without histones, the unwound DNA in chromosomes would be very long. For example, each human… …
74Camptothecin — Systematic (IUPAC) name (S) 4 ethyl 4 hydroxy 1H pyrano[3 ,4 :6,7]indolizino[1,2 b] quinoline 3,14 (4H,12H) dione Clinical data …
75Genetically 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… …
76Genetically modified food — Genetically modified foods (GM foods or GMO foods) are foods derived from genetically modified organisms (GMOs). Genetically modified organisms have had specific changes introduced into their DNA by genetic engineering techniques. These… …
77Acide ribonucléique — « ARN » redirige ici. Pour les autres significations, voir ARN (homonymie). Structure 3D d un ARN régulateur (riboswitch) …
78MicroRNA — The stem loop secondary structure of a pre microRNA from Brassica oleracea. A microRNA (abbreviated miRNA) is a short ribonucleic acid (RNA) molecule found in eukaryotic cells. A microRNA molecule has very few nucleotides (an average of 22)… …
79Nucleosome — Nucleosomes are the basic unit of DNA packaging in eukaryotes, consisting of a segment of DNA wound around a histone protein core.[1] This structure is often compared to thread wrapped around a spool.[2] Nucleosomes form the fundamental repeating …
80genetically modified organism — Introduction organism whose genome has been engineered in the laboratory in order to favour the expression of desired physiological traits or the production of desired biological products. In conventional livestock production, crop farming, and… …
