Thaum cov kev hloov caj ces tuaj yeem hloov pauv cov protein uas tsim los, kev hloov pauv ntawm cov noob caj noob ces cuam tshuam rau cov noob caj noob ces tig cov noob "rau" thiab "tawm " Txij li thaum koj ib puag ncig thiab kev coj cwj pwm, xws li kev noj haus thiab kev tawm dag zog, tuaj yeem ua rau muaj kev hloov pauv hauv epigenetic, nws yooj yim pom kev sib txuas ntawm koj cov noob thiab koj tus cwj pwm thiab ib puag ncig.
Kev hloov pauv ntawm epigenetic hloov pauv cov kev qhia gene?
Hnub, kev hloov pauv ntawm epigenetic, lossis "tags," xws li DNA methylation thiab hloov kho histone, hloov DNA nkag tau thiab cov qauv chromatin, yog li tswj cov qauv ntawm cov noob qhia. Cov txheej txheem no tseem ceeb heev rau kev loj hlob ib txwm thiab kev sib txawv ntawm cov kab mob sib txawv ntawm cov kab mob hauv cov neeg laus.
Kev sib raug zoo ntawm DNA thiab epigenetics yog dab tsi?
Epigenetics txhais tau tias "saum toj" lossis "nyob rau saum" caj ces. Nws hais txog kev hloov kho sab nraud rau DNA uas tig cov noob "rau" lossis "tawm." Cov kev hloov kho no tsis hloov DNA ib ntus, tab sis hloov, lawv cuam tshuam li cas cov hlwb "nyeem" noob. Epigenetic hloov pauv hloov lub cev qauv ntawm DNA.
Yuav ua li cas hloov pauv ntawm epigenetic tuaj yeem tshwm sim hauv genome los cuam tshuam cov noob qhia?
Muaj ob hom kev hloov pauv ntawm epigenetic - DNA methylation thiab histone hloov kho (16).
Dab tsi yog epigenetic qhia?
Epigenetics yog txoj kev tshawb fawb ntawm cov hlwb li cas tswj cov noob caj ces yam tsis hloov DNA ua ntu zus. … Nyob rau hauv tag nrho cov DNA nyob rau hauv ib lub xovtooj ntawm tes (genome), tag nrho cov kev hloov kho uas tswj cov kev ua (qhia) ntawm cov noob yog hu ua lub epigenome.
