Video: Dab tsi yog qhov xav tau rau kev qhia gene?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Gene qhia yog tus txheej txheem uas cov ntaub ntawv los ntawm a noob yog siv nyob rau hauv lub synthesis ntawm ib tug haumxeeb noob khoom. Cov khoom no feem ntau yog cov protein, tab sis nyob rau hauv non-protein coding noob xws li hloov RNA (tRNA) lossis me me nuclear RNA (snRNA) noob , cov khoom yog ib qho kev ua haujlwm RNA.
Hauv qhov no, dab tsi yog theem ntawm kev qhia gene?
Genes uas code rau amino acid sequences yog hu ua 'structural genes'. Cov txheej txheem ntawm cov noob qhia muaj ob theem tseem ceeb: Transcription: lub ntau lawm ntawm tus xa xov RNA (mRNA) los ntawm enzyme RNA polymerase, thiab ua ntawm qhov tshwm sim mRNA molecule.
Ib tug kuj yuav nug, dab tsi yog qhov tseem ceeb ntawm kev qhia gene? Gene qhia yog tus txheej txheem uas cov ntaub ntawv encoded nyob rau hauv a noob ua rau kev tsim cov protein. Cov gene qhia ntsuas ntawm ib lub sijhawm twg yog qhov qhia txog lub xeev ntawm lub sijhawm ntawd. Thaum a noob yog qhia , nws tso cai rau lub xov tooj ntawm tes los koom nrog qee yam haujlwm lossis cov txheej txheem.
Yog li ntawd, dab tsi yog gene qhia hauv cov ntsiab lus yooj yim?
Gene qhia yog cov txheej txheem uas cov ntaub ntawv keeb kwm yav dhau los hauv a noob , qhov sib lawv liag ntawm DNA puag khub, yog ua rau ua haujlwm noob khoom, zoo li protein ntau los yog RNA. Lub tswv yim tseem ceeb yog DNA tau hloov mus rau RNA, uas tom qab ntawd muab txhais ua cov protein.
Cov kev qhia gene tswj li cas?
Gene qhia yog qhov tseem ceeb tswj nyob rau theem ntawm kev sau ntawv, feem ntau yog los ntawm kev khi cov proteins rau cov chaw tshwj xeeb ntawm DNA. Lub regulator noob codes rau synthesis ntawm ib tug repressor molecule uas khi rau tus neeg teb xov tooj thiab blocks RNA polymerase los ntawm transcribing cov qauv noob.
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