Video: Qhov piv txwv chromosome yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
npe. Lub ntsiab txhais ntawm a chromosome yog ib tug xov zoo li cov qauv ntawm DNA (nucleic acids thiab proteins) uas nqa cov noob. Cov noob "X" lossis "Y" uas txiav txim siab seb koj yuav yog ib tug tub lossis ib tug ntxhais piv txwv ntawm a chromosome . YourDictionary txhais thiab siv piv txwv.
Kuj tseem paub yog, koj piav qhia li cas chromosome yog dab tsi?
Nyob rau hauv lub nucleus ntawm txhua lub cell, DNA molecule yog ntim rau hauv xov zoo li cov qauv hu ua chromosomes . Txhua chromosome yog ua los ntawm DNA nruj coiled ntau zaus nyob ib ncig ntawm cov proteins hu ua histones uas txhawb nqa nws cov qauv.
Qhov thib ob, chromosome yog dab tsi? Chromosomes yog cov qauv zoo li xov nyob rau hauv lub nucleus ntawm cov tsiaj thiab cov nroj tsuag. Txhua chromosome yog ua los ntawm protein thiab ib qho molecule ntawm deoxyribonucleic acid (DNA). Dhau los ntawm niam txiv mus rau cov xeeb ntxwv, DNA muaj cov lus qhia tshwj xeeb uas ua rau txhua hom tsiaj muaj sia.
Tsuas yog li ntawd, dab tsi yog chromosome hauv cov ntsiab lus yooj yim?
Cov chromosomes ntawm ib lub cell yog nyob rau hauv lub cell nucleus. Lawv nqa cov ntaub ntawv ntawm caj ces. Chromosomes yog tsim los ntawm DNA thiab protein ua ke ua chromatin. Txhua chromosome muaj ntau cov noob. Thaum lawv duplicate, chromosomes zoo li tsab ntawv "X".
Qhov piv txwv ntawm DNA yog dab tsi?
dna ua - Kev Kho Mob Txhais Lus A nucleic acid uas nqa cov ntaub ntawv caj ces hauv cov hlwb thiab qee cov kab mob, muaj ob txoj hlua ntev ntawm nucleotides twisted rau hauv ob lub helix thiab koom nrog hydrogen bonds ntawm lub hauv paus ntxiv adenine thiab thymine lossis cytosine thiab guanine.
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