Video: Puas yog mitochondrial DNA tib yam li nuclear DNA?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nuclear DNA thiab mitochondrial DNA txawv ntawm ntau txoj hauv kev, pib nrog qhov chaw thiab cov qauv. Nuclear DNA yog nyob rau hauv lub nucleus ntawm eukaryote hlwb thiab feem ntau muaj ob daim ntawv theej ib lub cell thaum mitochondrial DNA yog nyob rau hauv lub mitochondria thiab muaj 100-1,000 daim ntawv ib lub xovtooj.
Hais txog qhov no, puas yog mitochondrial DNA ruaj khov dua li cov DNA DNA?
Txoj kev tshawb fawb tam sim no tau qhia tias mtDNA yog ntau rhiab heev dua li cov DNA rau H2O2-induced kev puas tsuaj, thiab kev kho mob ntev ua rau tsis tu ncua mtDNA puas thiab poob ntawm mitochondrial muaj nuj nqi.
Qhov thib ob, tib neeg puas muaj tib lub mitochondrial DNA? Vim li ntawd, txhua tus tib neeg hnub no tuaj yeem taug qab lawv mitochondrial DNA rov qab rau nws. Hauv nws DNA , thiab ntawm nws cov phooj ywg, muaj yuav luag tag nrho qhov kev hloov pauv caj ces peb pom nyob rau niaj hnub no tib neeg . Txij li thaum Eve lub sij hawm, txawv pejxeem ntawm tib neeg muaj drifted sib nrug ntawm caj ces, tsim cov haiv neeg uas peb pom niaj hnub no.
Hais txog qhov no, hom DNA twg mitochondria muaj?
Mitochondrial DNA yog lub voj voog me me chromosome pom hauv mitochondria. Cov organelles pom nyob rau hauv hlwb feem ntau hu ua lub zog ntawm lub cell. Lub mitochondria, thiab yog li mitochondrial DNA, tau dhau los ntawm niam mus rau cov xeeb ntxwv los ntawm lub qe cell.
Puas yog mitochondrial DNA pom nyob rau hauv lub nucleus?
Txhua lub cell muaj ntau pua txog txhiab tus mitochondria ,qu yog nyob nyob rau hauv cov kua uas nyob ib puag ncig lub nucleus (lub cytoplasm). Txawm tias feem ntau DNA yog ntim rau hauv chromosomes nyob rau hauv lub nucleus , mitochondria kuj muaj ib tug me me ntawm lawv tus kheej DNA . Cov khoom siv caj ces no hu ua mitochondrial DNA los yog mtDNA.
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Dab tsi yog qhov txawv ntawm mitochondrial thiab nuclear DNA?
Txhawm rau suav nws, qhov sib txawv ntawm lawv yog: Nuclear DNA pom nyob rau hauv lub nucleus ntawm lub cell thaum mitochondrial DNA pom tsuas yog hauv mitochondria ntawm lub cell. Nuclear DNA tau txais los ntawm leej niam thiab leej txiv ob qho tib si ntawm qhov tod tes, mitochondrial DNA tau txais los ntawm leej niam nkaus xwb