Txoj hauj lwm wobble yog dab tsi?
Txoj hauj lwm wobble yog dab tsi?

Video: Txoj hauj lwm wobble yog dab tsi?

Video: Txoj hauj lwm wobble yog dab tsi?
Video: Automata: Storytelling Devices: Device 1: Cam and Cam Follower (Hmong subtitles) 2024, Hlis ntuj nqeg
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Cov wobble txoj hauj lwm ntawm ib codon yog hais txog 3rd nucleotide hauv codon. Cov nucleotide no muaj ob yam tseem ceeb: Kev khi ntawm codon hauv mRNA lub cognate tRNA ntau "looser" hauv peb. txoj hauj lwm ntawm codon. Qhov no tso cai rau ntau hom tsis-Watson-Crick puag ua ke los tshwm sim ntawm peb codon txoj hauj lwm.

Tib neeg kuj nug, dab tsi yog wobble hauv DNA?

Cov wobble cov nyhuv yog ib qho tshwm sim los ntawm qhov redundancy pom nyob rau hauv genetic code. Txhua amino acid yog coded rau los ntawm 3 nucleotide ib ntus ntawm mRNA. Yog li, txhua tus amino acid tuaj yeem raug coded rau ntau tshaj ib codon. Rau ib qho amino acid, thawj 2 nucleotides hauv codon yeej ib txwm zoo ib yam.

Qhov thib ob, yog vim li cas Wobble Hypothesis tseem ceeb? Cov Wobble Hypothesis piav qhia vim li cas ntau codons tuaj yeem sau rau ib qho amino acid. Ib qho tRNA molecule (nrog rau ib qho amino acid txuas) tuaj yeem paub thiab khi rau ntau tshaj ib codon, vim qhov tsis tshua meej hauv paus khub uas tuaj yeem tshwm sim ntawm 3rd puag ntawm codon thiab lub hauv paus ntawm 1 txoj hauj lwm ntawm anticodon.

Tsis tas li ntawd, dab tsi tso cai rau tRNA molecules kom wobble?

" Wobble "Pairing ntawm tRNA anticodon nrog mRNA codon pib los ntawm 5' kawg ntawm codon. Thaum thawj ob txoj haujlwm sib koom ua ke, qhov tseeb ntawm kev sib koom ua ke ntawm txoj haujlwm thib peb yog qhov tseem ceeb tsawg. Qhov no tso cai mRNA muab txhais nrog tsawg dua 64 tRNAs uas yuav tsum tsis muaj wobble.

Yuav ua li cas muaj ib tug wobble txhais tau tias?

1a: txav los yog mus nrog qhov tsis sib xws ntawm pob zeb lossis staggering motion lossis unstadly thiab clumsily ntawm ib sab mus rau sab. b:qeb,. 2: yoj, vac.

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