Dab tsi yog gene qhia hauv microbiology?
Dab tsi yog gene qhia hauv microbiology?

Video: Dab tsi yog gene qhia hauv microbiology?

Video: Dab tsi yog gene qhia hauv microbiology?
Video: Hmong new song 2016 - Yog dab tsi - Xub Hluav Taws (Official MV) 2024, Kaum ib hlis
Anonim

Tsuas yog ib pawg ntawm cov proteins nyob rau hauv ib lub cell ntawm ib lub sij hawm tau qhia. Genomic DNA muaj ob qho tib si qauv noob , uas encode cov khoom uas ua hauj lwm raws li cellular qauv los yog enzymes, thiab kev tswj noob , uas encode cov khoom uas tswj gene qhia . Cov kev qhia ntawm a noob yog ib txoj kev tswjhwm heev.

Nyob rau hauv txoj kev no, 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.

Dab tsi yog gene qhia thiab vim li cas nws tseem ceeb? Gene qhia yog txheej txheem tseem ceeb los tsim ntau yam kev ua haujlwm lom neeg thiab tsav cov phenotypes [2]. Tom qab lub hauv paus molecular dogma, ib tug noob-ib daim ntawm DNA ntawm chromosome-yog thawj transcribed rau RNA ( kev sau ntawv ).

Ntxiv mus, dab tsi yog gene qhia hauv cov kab mob?

Hauv kab mob , noob feem ntau pom nyob rau hauv operons In kab mob , hais txog noob feem ntau pom muaj nyob rau hauv ib pawg ntawm cov chromosome, uas lawv tau sau los ntawm ib qho kev txhawb nqa (RNA polymerase binding site) ua ib chav tsev. Xws li ib pawg ntawm noob nyob rau hauv kev tswj ntawm ib tus neeg txhawb nqa yog hu ua operon.

Dab tsi yog operon hauv microbiology?

Operaon : Ib txheej ntawm cov noob tau sau tseg raws li kev tswj hwm ntawm tus neeg teb xov tooj gene. Tshwj xeeb tshaj yog, ib ua haujlwm yog ib ntu ntawm DNA uas muaj cov noob uas nyob ib sab nrog rau cov noob caj noob ces, cov noob neeg ua haujlwm, thiab cov noob tswj hwm. Ib ua haujlwm yog li no lub luag haujlwm ntawm kev hloov pauv thiab kev tswj caj ces.

Pom zoo: