Koj piav qhia txog kev hloov pauv li cas?
Koj piav qhia txog kev hloov pauv li cas?

Video: Koj piav qhia txog kev hloov pauv li cas?

Video: Koj piav qhia txog kev hloov pauv li cas?
Video: Qhia 9 nqi lug koj lub neej hloov pauv zoo li cas 2024, Kaum ib hlis
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Ib gene kev hloov pauv yog ib qho kev hloov pauv mus tas li hauv DNA ib ntus uas ua rau cov noob, xws li qhov sib txawv ntawm qhov pom hauv tib neeg feem ntau. Kev hloov pauv qhov loj me; lawv tuaj yeem 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.

Hais txog qhov no, koj piav qhia txog kev hloov pauv li cas?

A Kev hloov pauv tshwm sim thaum DNA gene puas lawm los yog hloov nyob rau hauv xws li ib txoj kev los hloov cov genetic lus nqa los ntawm cov noob. Mutagen yog ib tus neeg sawv cev ntawm cov khoom uas tuaj yeem ua rau muaj kev hloov pauv mus tas li rau lub cev muaj pes tsawg leeg ntawm DNA gene xws li cov lus genetic hloov.

Kuj Paub, 4 hom kev hloov pauv yog dab tsi? Muaj peb hom DNA Mutations: lub hauv paus hloov, tshem tawm thiab ntxig.

  • Kev hloov pauv hauv paus. Ib qho kev hloov pauv yog hu ua point mutations, nco qab qhov kev hloov pauv ntawm Glu --- Val uas ua rau mob qog nqaij hlav.
  • Kev tshem tawm.
  • Insertions.

Kuj paub yog, dab tsi yog mutation nrog piv txwv?

A kev hloov pauv yog ib qho kev hloov pauv uas tshwm sim hauv peb cov DNA ib ntus, vim yog qhov yuam kev thaum DNA tau theej los yog los ntawm ib puag ncig yam xws li UV teeb thiab luam yeeb. Kev hloov pauv kuj tuaj yeem tshwm sim los ntawm kev cuam tshuam rau ib puag ncig xws li haus luam yeeb, hnub ci thiab hluav taws xob.

Koj yuav txheeb xyuas DNA hloov pauv li cas?

Tag nrho exploit ib los yog ntau tshaj ntawm cov yam ntxwv ntawm DNA los yog cov enzymes uas ua rau nws. Ib khub hauv paus kev hloov pauv tuaj yeem yog txheeb xyuas los ntawm ib qho ntawm cov hauv qab no: Direct sequencing, uas koom nrog kev txheeb xyuas txhua tus neeg hauv paus khub, ua ntu zus, thiab sib piv cov kab ke mus rau qhov qub gene.

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