EA BIOMEDICAL

Sebopeho sa Chromosome Linthong tse Phelang Li-chromosome ke e 'ngoe ea likarolo tsa bohlokoa ka ho fetisisa liseleng tse phelang, e leng "sejana" sa mantlha sa tlhahisoleseling ea liphatsa tsa lefutso. Ka har'a li-chromosome, DNA e bolokiloe, e na le liphatsa tsa lefutso tse laolang litšobotsi, mesebetsi ea 'mele, le nts'etsopele ea sebopuoa ho tloha seleng e le' ngoe ho ea ho motho ea felletseng. Sebopeho sa li-chromosome se khahla eseng feela ka sebopeho sa sona empa hape le ka ... Bala haholoanyane

Sephutheloana sa DNA ka Seleng Nucleus Ka hare ho sele e 'ngoe le e 'ngoe ea eukaryotic—joalo ka ea batho, liphoofolo, limela le li-fungus—ho bolokoa litaelo tsa bophelo ka mokhoa oa DNA (deoxyribonucleic acid). Haeba DNA e tsoang sele e le 'ngoe ea motho e ne e ka phutholoha, e ne e tla ba bolelele ba limithara tse ka bang peli. Phephetso: khoele e telele hakana e ka kena joang ka har'a khubu ea sele, e bophara ba li-micrometer tse 'maloa feela? … Bala haholoanyane

Li-Histone le Sebopeho sa Chromatin Ka har'a khubu ea lisele tsa eukaryotic, DNA ha e eo e le "khoele" e sa tšoenyehang. Haeba DNA eohle ea motho e ne e ka phutholoha, e ne e tla ba bolelele ba limithara tse ka bang peli, leha khubu e le bophara ba li-micrometer tse 'maloa feela. Ho netefatsa hore bolelele bona bo boholo ba lintho tsa lefutso bo ka lekana ha bo ntse bo le teng bakeng sa lits'ebetso tsa bohlokoa tsa baeloji, sele... Bala haholoanyane

Methylation ea DNA ho Phatlalatso ea Gene Methylation ea DNA ke e 'ngoe ea mekhoa ea bohlokoa ka ho fetisisa ea epigenetic, e laolang hore na gene e hlahisoa neng le hore na e matla hakae ntle le ho fetola tatellano ea motheo oa DNA ka boeona. Ka mantsoe a mang, tlhahisoleseling ea liphatsa tsa lefutso e lula e tšoana, empa "ho bala" ha eona ho ka fetoha. Ts'ebetso ena e bapala karolo e kholo nts'etsopele ea lesea le sa tsoa emoloa, phapang ea sele, tlhokomelo ea boitsebiso ba lisele, le… Bala haholoanyane

Epigenetics Taolong ea Liphatsa tsa Lefutso Epigenetics ke lekala la baeloji le ithutang liphetoho tšebetsong ea liphatsa tsa lefutso tse sa bakoeng ke liphetoho tatellanong ea DNA. Ka mantsoe a mang, epigenetics e hlalosa kamoo liphatsa tsa lefutso li ka buloang kapa tsa tima ntle le ho fetola khoutu ea liphatsa tsa lefutso ka boeona. Khopolo ena ea bohlokoa hobane e re thusa ho utloisisa hore na ke hobane'ng ha lisele tse 'meleng tse arolelanang DNA e le' ngoe li ka… Bala haholoanyane

Li-genome tsa Prokaryotic ho Baeloji ea Limolek'hule Li-genome tsa Prokaryotic ke motheo oa motheo oa baeloji ea limolek'hule, tse bontšang kamoo bophelo, boemong ba bona bo bonolo ka ho fetisisa, bo bolokang, bo hlahisang le ho fetisa tlhahisoleseling ea liphatsa tsa lefutso. Li-prokaryotes—tse kenyeletsang libaktheria le li-archaea—li na le mekhatlo ea genome e nyane haholo ha li bapisoa le li-eukaryotes, leha ho le joalo li sebetsa e le mehlala e metle bakeng sa ho utloisisa melao-motheo ea motheo ea ho ikatisa ha DNA, taolo ea liphatsa tsa lefutso, phetoho, le… Bala haholoanyane

Tlhophiso ea Li-Genome Liseleng tsa Eukaryotic Li-genome liseleng tsa eukaryotic—tse kang tsa liphoofolo, limela, li-fungus le li-protist—li na le boemo bo rarahaneng le bo hlophisitsoeng hantle ba tlhophiso. Ho fapana le li-prokaryotes, tseo ka kakaretso li nang le DNA e chitja e fumanehang sebakeng se le seng (nucleoid), lisele tsa eukaryotic li boloka boholo ba thepa ea tsona ea lefutso ka har'a nucleus ka mokhoa oa li-chromosome tse otlolohileng. E le hore DNA e… Bala haholoanyane

Ho Kopanya Liphatsa tsa Lefutso ho Baeloji ea Limolek'hule Ho kopanya liphatsa tsa lefutso ke e 'ngoe ea lits'ebetso tsa bohlokoa ka ho fetisisa baelojing ea limolek'hule, e lumellang thepa ea liphatsa tsa lefutso ho fapanyetsana, ho hlophisoa bocha, kapa ho kopanngoa hape. Ts'ebetso ena e bapala karolo e kholo ho theheng phapang ea liphatsa tsa lefutso, ho boloka botsitso ba genome, le ho lokisa tšenyo ea DNA. Linthong tse phelang—ho tloha libaktheria ho ea ho batho—ho kopanya hape ke sesebelisoa sa tlhaho sa ho boloka ho phela… Bala haholoanyane

Tokiso ea DNA Botsitsong ba Genome Botsitso ba genome ke bokhoni ba thepa ea liphatsa tsa lefutso ea ntho e phelang ho boloka tatellano le sebopeho sa eona sa DNA ha nako e ntse e ea. Botsitso bona bo bohlokoa hobane DNA e boloka litaelo tsa baeloji tse laolang hoo e ka bang ts'ebetso e 'ngoe le e 'ngoe ea sele, ho tloha karohanong le metabolism ho ea likarabelong tsa tikoloho. Leha ho le joalo, DNA ha se molek'hule e tsitsitseng ka ho phethahetseng. Letsatsi le leng le le leng, … Bala haholoanyane

Liphetoho tsa Liphatsa tsa Lefutso Litsamaisong tsa Baeloji Liphetoho tsa liphatsa tsa lefutso ke liphetoho tse sa feleng tatellanong ea DNA, e leng thepa ea mantlha ea liphatsa tsa lefutso hoo e batlang e le linthong tsohle tse phelang. Liphetoho tsena li ka etsahala ka "tlhaku" e le 'ngoe ea DNA (motheo oa naetrojene) kapa karolong e telele. Le hoja lentsoe "phetoho" hangata le amahanngoa le lefu kapa ntho e kotsi, liphetohong tsa litsamaiso tsa baeloji ha e le hantle... Bala haholoanyane