In 1953, Francis Crick thiab James Watson thawj zaug piav txog cov qauv molecular ntawm DNA, uas lawv hu ua "ob chav helix," hauv phau ntawv journal Nature. Rau qhov kev tshawb pom no, Watson, Crick, thiab lawv cov npoj yaig Maurice Wilkins Maurice Wilkins Nws tau paub zoo tshaj plaws rau nws txoj haujlwm ntawm King's College London ntawm tus qauv ntawm DNA. Wilkins 'kev ua haujlwm ntawm DNA poob rau hauv ob theem sib txawv. Thawj qhov yog xyoo 1948-1950, thaum nws cov kev tshawb fawb thawj zaug tau tsim thawj cov duab X-ray ntawm DNA, uas nws tau nthuav tawm ntawm lub rooj sib tham hauv Naples xyoo 1951 tau koom nrog James Watson. https://en.wikipedia.org › wiki › Maurice_Wilkins
Maurice Wilkins - Wikipedia
yeej Nobel nqi zog hauv Physiology, lossis Tshuaj, xyoo 1962.
Leej twg nrhiav tau DNA ob helical?
Lub 3-dimensional ob helix qauv ntawm DNA, raug elucidated los ntawm James Watson thiab Francis Crick.
Thaum twg & leej twg nrhiav tau ob tus qauv helical ntawm DNA?
Qhov kev tshawb pom hauv xyoo 1953 ntawm ob lub helix, tus qauv twisted-ladder ntawm deoxyribonucleic acid (DNA), los ntawm James Watson thiab Francis Crick cim qhov tseem ceeb hauv keeb kwm ntawm kev tshawb fawb thiab tau ua rau niaj hnub molecular biology, uas muaj kev txhawj xeeb loj nrog kev nkag siab tias cov noob tswj cov txheej txheem tshuaj li cas hauv …
Leej twg lees paub cov qauv helical ntawm DNA?
Txawm tias James Watson thiab Francis Crick txiav txim siab qhovob-helical qauv ntawm DNA, DNA nws tus kheej tau txheeb xyuas ze li ntawm 90 xyoo dhau los los ntawm Swiss chemist Friedrich Miescher.
DNA yog dab tsi?
DNA yog tsim los ntawm cov molecules hu ua nucleotides. Txhua nucleotide muaj phosphate pawg, pawg suab thaj thiab nitrogen hauv paus. Plaub hom nitrogen hauv paus yog adenine (A), thymine (T), guanine (G) thiab cytosine (C).
