Dab tsi yog kev hloov pauv ua rau?

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Dab tsi yog kev hloov pauv ua rau?
Dab tsi yog kev hloov pauv ua rau?

Video: Dab tsi yog kev hloov pauv ua rau?

Video: Dab tsi yog kev hloov pauv ua rau?
Video: Nkauj Tawm Tshiab 2022-2023 Thaiv tsab Sonie thoj Khwv los rau koj hloov 2024, Lub peb hlis ntuj
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Ib qho kev hloov pauv tshwm sim thaum daim ntawv wrinkle ntawm DNA template strand thiab tom qab ntawd ua rau cov nucleotide raug tshem tawm ntawm cov kab rov ua dua(Daim duab 3). Daim duab 3: Hauv kev hloov pauv hloov pauv, cov ntaub ntawv wrinkle ntawm DNA qauv strand, uas ua rau cov nucleotide raug tshem tawm los ntawm cov kab rov ua dua.

kab mob dab tsi tshwm sim los ntawm kev hloov pauv?

Kev tshem tawm yog lub luag haujlwm rau cov kab mob ntawm caj ces, suav nrog qee kis ntawm cov txiv neej tsis muaj menyuam, ob feem peb ntawm cov neeg mob Duchenne cov leeg nqaij dystrophy, thiab ob feem peb ntawm cov mob cystic fibrosis (cov tshwm sim los ntawm ΔF508). Kev tshem tawm ntawm ib feem ntawm caj npab luv ntawm chromosome 5 tshwm sim hauv Cri du chat syndrome.

Vim li cas kev tshem tawm kev hloov pauv ua teeb meem?

1). Vim hais tias ib qho kev ntxig lossis tshem tawm ua rau lub thav duab-hloov uas hloov cov kev nyeem ntawm cov codons tom ntej thiab, yog li ntawd, hloov tag nrho cov amino acid ib ntus uas ua raws li kev hloov pauv, ntxig thiab tshem tawm feem ntau muaj teeb meem ntau dua li kev hloov pauv uas tsuas yog ib qho amino acid. yog altered.

Kev tshem tawm yog dab tsi thiab nws ua rau dab tsi?

=Kev tshem tawm yog hom kev hloov pauv cuam tshuam nrog kev poob ntawm cov khoom siv caj ces. Nws tuaj yeem yog me me, suav nrog ib tus khub DNA uas ploj lawm, lossis loj, suav nrog ib daim chromosome.

Yuav ua li cas yog tias cov nucleotide raug tshem tawm?

A DNA ib ntus yog cov saw hlau ntawm ntau lub me me hu ua nucleotides. … Piv txwv li, yog tias tsuas yog ib qho nucleotide raug tshem tawm ntawm qhov sib lawv liag, ces tag nrho cov codons suav nrog thiab tom qab kev hloov pauv yuav muaj kev cuam tshuam kev nyeem ntawv. Qhov no tuaj yeem ua rau muaj kev sib koom ua ke ntawm ntau cov amino acids tsis raug rau hauv cov protein.

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