Nyob rau hauv noob caj noob ces, cov kws tshawb fawb siv cov kev txwv tshwj xeeb enzyme kom tshem tawm qee cov strand lossis strands ntawm DNA … strands, hloov kho cov caj ces ntawm DNA thiab yuav muab cov txheej txheem tshiab DNA uas cov kws tshawb fawb xav tau.
Tus txheej txheem ntawm noob caj noob ces yog dab tsi?
Gene splicing yog txheej txheem ntawm chemically txiav DNA txhawm rau ntxiv cov hauv paus rau DNA strand Cov DNA yog txiav siv cov tshuaj tshwj xeeb hu ua txwv enzymes,. Gene splicing yog qhov kev tshem tawm ntawm introns los ntawm cov ntaub ntawv tseem ceeb ntawm cov noob tsis txuas ntxiv thaum lub sijhawm Transcription.
gene splicing ua haujlwm li cas thiab qhov tshwm sim ntawm tus txheej txheem yog dab tsi?
Splicing yog ib theem nrab ntawm cov txheej txheem thaum peb cov noob tau txiav txim siab rau hauv cov protein, cov neeg ua haujlwm ntawm lub xovtoojHauv cov txheej txheem no, DNA ntawm peb cov noob tau muab tso rau hauv "tus xa xov "RNA, ib qho molecule zoo ib yam li DNA uas ua haujlwm raws li cov qauv tsim los tsim cov proteins.
Yuav ua li cas thaum sib tw?
In splicing, qee seem ntawm RNA cov ntawv teev lus (introns) raug tshem tawm, thiab cov seem seem (exons) tau nyam rov qab ua ke. Qee cov noob tuaj yeem hloov pauv tau, ua rau kev tsim cov mRNA sib txawv ntawm mRNA molecules los ntawm tib daim ntawv sau thawj zaug.
Kev sib txuas ua haujlwm li cas?
Ib qhov sib txuas yog cov protein koom nrog kev tshem tawm cov introns los ntawm cov hlua ntawm tus xa xov RNA, kom cov exons tuaj yeem khi ua ke; Cov txheej txheem yuav siv qhov chaw nyob rau hauv cov khoom hu ua spliceosomes. Cov noob tau hloov pauv zuj zus thaum peb muaj hnub nyoog, thiab cov khoom sib txuas tuaj yeem thim rov qab qhov sib txawv.
