Video: Erwin Chargaff pab txhawb dab tsi rau kev tshawb pom DNA?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Los ntawm kev sim ua tib zoo, Chargaff nrhiav pom ob txoj cai uas pab coj mus rau lub nrhiav pom ntawm ob chav helix qauv ntawm DNA . Thawj txoj cai yog nyob rau hauv DNA tus naj npawb ntawm guanine yog sib npaug rau cov cytosine units, thiab tus naj npawb ntawm adenine units yog sib npaug rau cov thymine units.
Tsis tas li ntawd, thaum twg Erwin Chargaff pab txhawb rau DNA?
Xyoo 1949, Chargaff nrhiav pom tias cov proportions ntawm cov hauv paus hauv DNA nyob ntawm cov hom DNA los ntawm.
Tsis tas li ntawd, Watson thiab Crick tau pab txhawb qhov kev tshawb pom DNA li cas? Watson thiab Francis H. C. Crick tshaj tawm tias lawv tau txiav txim siab tus qauv ob-helix ntawm DNA , cov molecule uas muaj tib neeg cov noob caj noob ces. Txawm li cas los DNA - luv rau deoxyribonucleic acid-yog nrhiav pom Xyoo 1869, nws lub luag haujlwm tseem ceeb hauv kev txiav txim siab caj ces tsis tau tshwm sim txog xyoo 1943.
Tom qab ntawd, ib tug kuj yuav nug, vim li cas Erwin Chargaff nrhiav tau tseem ceeb?
Tus American biochemist Erwin Chargaff (Yug 1905) nrhiav pom tias DNA yog lub hauv paus tseem ceeb ntawm cov noob, yog li pab tsim ib txoj hauv kev tshiab rau kev kawm txog biology ntawm heredity. Chargaff cov feem ntau tseem ceeb Kev pab rau biochemistry yog nws txoj haujlwm nrog deoxyribonucleic acid, feem ntau hu ua DNA.
Erwin Chargaff paub txog dab tsi?
Chargaff cov cai
Pom zoo:
Dab tsi yog 5 txoj haujlwm loj ntawm kev kawm uas pab txhawb rau kev tshawb fawb ib puag ncig?
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