Video: Dab tsi yog cov kab hauv DNA hu ua?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ua tib zoo saib cov qauv tshuaj ntawm DNA qhia txog plaub lub tsev loj. Peb hu Cov nitrogenous hauv paus: Adenine (A), Thymine (T), Guanine (G), thiab Cytosine (C). Yog tias koj xav txog cov qauv ntawm DNA Raws li ib tug ntaiv, lub rungs ntawm tus ntaiv (qhov twg koj yuav muab koj txhais tes) yog tsim los ntawm cov nitrogenous bases.
Tom qab ntawd, 3 hom DNA yog dab tsi?
Peb loj cov qauv ntawm DNA yog ob leeg stranded thiab kev cob cog rua los ntawm kev sib cuam tshuam ntawm complementary puag khub. Cov no yog cov ntsiab lus A-daim ntawv, B-daim ntawv, thiab Z-daim ntawv DNA.
Ib yam li ntawd, DNA khaws nws cov duab li cas? Cov DNA molecule yog puab zoo li tus ntaiv ntawd yog twisted rau hauv ib co coiled configuration hu ua ob helix. Cov nitrogen bases daim ntawv tus rungs ntawm tus ntaiv thiab yog teem rau hauv khub, uas yog kev cob cog rua rau ib leeg los ntawm cov tshuaj bonds.
Kuj Paub, lub npe scientific rau cov duab ntawm DNA yog dab tsi?
Ob chav helix yog ib qho kev piav qhia ntawm cov molecular puab ntawm ob-stranded DNA molecule. Xyoo 1953, Francis Crick thiab James Watson thawj zaug piav txog cov qauv molecular ntawm DNA , uas lawv hu ua "ob helix," nyob rau hauv phau ntawv journal Nature.
Dab tsi yog 6 yam ntawm DNA?
DNA yog tsim los ntawm rau lub me me molecules - tsib carbon suab thaj hu ua deoxyribose , a phosphate molecule thiab plaub txawv nitrogenous bases ( adenine , thymine , cytosine thiab guanine ).
Pom zoo:
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