Kev hloov pauv tuaj yeem tshwm sim hauv kev sau ntawv?
Kev hloov pauv tuaj yeem tshwm sim hauv kev sau ntawv?

Video: Kev hloov pauv tuaj yeem tshwm sim hauv kev sau ntawv?

Video: Kev hloov pauv tuaj yeem tshwm sim hauv kev sau ntawv?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Kev hloov pauv qhov loj me; lawv ua tau cuam tshuam qhov twg los ntawm ib qho DNA tsev thaiv (hauv paus khub) mus rau ib ntu loj ntawm chromosome uas suav nrog ntau cov noob. Daim duab: Cov txheej txheem ntawm cov protein synthesis ua ntej tsim ib daim qauv ntawm mRNA ntawm DNA ib ntus thaum lub sij hawm txheej txheem ntawm kev sau ntawv.

Kuj paub, qhov kev hloov pauv cuam tshuam li cas rau kev sau ntawv?

Ib daim ntawv ntawm kev hloov pauv yog point kev hloov pauv , nyob rau hauv uas ib lub hauv paus hloov. Qhov no yuav yog li hloov ib lub hauv paus hauv qhov tshwm sim mRNA strand. Nyob ntawm seb qhov kev hloov pauv li cas ua tau muaj qhov sib txawv nyhuv ntawm lub resulting amino acid. Tsis muaj tseeb kev hloov pauv tuaj yeem ua rau truncated polypeptides, rhuav tshem cov protein ua haujlwm.

nyob rau theem twg mutations tshwm sim? Cov kev hloov pauv no tuaj yeem tshwm sim los ntawm ib puag ncig xws li hluav taws xob ultraviolet los ntawm lub hnub, lossis tuaj yeem tshwm sim yog tias ua yuam kev raws li DNA luam nws tus kheej thaum lub sij hawm cell faib . Tau txais kev hloov pauv hauv cov hlwb somatic (hlwb uas tsis yog phev thiab qe qe) tsis tuaj yeem kis mus rau lwm tiam.

Ntxiv rau qhov no, kev hloov pauv tsis tseem ceeb cuam tshuam li cas rau kev sau ntawv?

A kev hloov pauv hauv DNA hloov mRNA, uas nyob rau hauv lem ua tau hloov cov amino acid saw. Nws ua tau vim a tsis muaj kev hloov pauv , uas ua rau ib tug luv luv saw vim yog thaum ntxov nres codon. Thiab lub hauv paus hloov ua tau kuj ua rau muaj kev ntsiag to kev hloov pauv , uas cov protein ua haujlwm tsis hloov hlo li.

Puas muaj kev hloov pauv hauv RNA?

Kev hloov pauv yog cov kev hloov ntawd tshwm sim hauv DNA los yog RNA . Kev hloov pauv tau nyob twj ywm, txhais tau tias lawv tsis muaj kev cuam tshuam rau cov protein ua, vim redundancy nyob rau hauv genetic code. Txawm li cas los xij, lwm yam kev hloov pauv tau ua suab nrov, uas hloov cov protein ib ntus thiab tejzaum nws tseem tiv thaiv cov protein los ntawm kev ua txhua yam.

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