Video: Tus txheej txheem ntawm duplication yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Duplication , los yog preloading, yog lub txheej txheem ntawm kev luam cov ntaub ntawv xws li cov ntaub ntawv, yeeb yaj duab, suab paj nruag, txuas thiab lwm yam ntaub ntawv mus rau ntau lub drives. Cov ntaub ntawv preload tuaj yeem xa mus rau ib qho ntawm ob txoj hauv kev. Tus neeg siv khoom tuaj yeem xa lawv cov preload los ntawm email lossis xa cov tsav uas tau ua ntej rau peb lub hoobkas.
Ib yam li ntawd, cov noob caj noob ces tshwm sim li cas?
Gene duplication tshwm sim thaum ib daim ntawv luam ntxiv ntawm a noob yog tsim nyob rau hauv lub cev genome . Qee zaum, gene duplication muaj txiaj ntsig zoo rau lub cev thiab tej zaum yuav ua rau muaj kev loj hlob ntawm hom tshiab. Ntau hom keratin hauv lub cev yog qhov tshwm sim ntawm duplications ntawm ib leeg noob.
Kuj Paub, dab tsi ua rau duplication hauv chromosomes? Kev kho mob txhais ntawm Chromosome duplication Chromosome duplication : Ib feem ntawm a chromosome hauv duplicate. Duplications feem ntau tshwm sim los ntawm ib qho kev tshwm sim hu ua tsis sib luag hla-dhau (recombination) uas tshwm sim ntawm misaligned homologous chromosomes thaum lub sij hawm meiosis (kab mob cell tsim).
Hais txog qhov no, yuav ua li cas tshwm sim nyob rau hauv ib tug duplication mutation?
Duplication yog hom kev hloov pauv uas suav nrog kev tsim ib lossis ntau daim ntawv theej ntawm cov noob lossis thaj tsam ntawm chromosome. Gene thiab chromosome duplications tshwm sim nyob rau hauv tag nrho cov kab mob, txawm hais tias lawv yog tshwj xeeb tshaj yog tseem ceeb ntawm cov nroj tsuag. Gene luam tawm yog ib qho tseem ceeb mechanism uas evolution tshwm sim.
Dab tsi yog qhov txawv ntawm kev rho tawm thiab luam tawm?
Kev tshem tawm tshwm sim thaum chromosome tawg thiab qee yam khoom siv caj ces ploj. Kev tshem tawm tuaj yeem loj lossis me, thiab tuaj yeem tshwm sim nyob txhua qhov chaw ntawm chromosome. Duplications . Duplications tshwm sim thaum ib feem ntawm chromosome raug theej ( luam tawm ) ntau zaus.
Pom zoo:
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