2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Drawing ntawm Smith txoj haujlwm, American molecular biologist Daniel Nathans Daniel Nathans Daniel Nathans (Lub Kaum Hli 30, 1928 - Kaum Ib Hlis 16, 1999) yog tus kws kho mob microbiologist Asmeskas. Nws tau tshaj tawm xyoo 1978 Nobel nqi zog hauv Physiology lossis Tshuaj rau kev tshawb pom ntawm kev txwv enzymes thiab lawv daim ntawv thov hauv kev txwv daim phiaj. https://en.wikipedia.org › wiki › Daniel_Nathans
Daniel Nathans - Wikipedia
pab txhawb cov txheej txheem ntawm DNA recombination hauv xyoo 1970–71 thiab pom tau tias hom II enzymes tuaj yeem pab tau hauv kev tshawb nrhiav caj ces. Genetic engineering raws li kev sib txuas ua ke tau pioneered hauv 1973 los ntawm Asmeskas biochemists Stanley N.
Leej twg invented recombination?
Paul Berg, biochemist ntawm Stanford uas yog thawj tus tsim cov DNA molecule recombinant xyoo 1972, tau sau ib tsab ntawv tsis ntev tom qab ntawd, nrog rau kaum lwm tus kws tshawb fawb, mus rau Phau ntawv Journal Science.
Leej twg npaj 1st recombinant DNA?
Stanley Cohen thiab Herbert Boyer'skeeb kwm kev sim siv cov tswv yim los txiav thiab muab tshuaj DNA los tsim thawj cov kab mob tsim tawm uas muaj cov khoom siv rov ua dua lossis "recombinant" DNA.
Boyer thiab Cohen nrhiav tau dab tsi?
Plasmid pSC101
Stanley Cohen thiab Herbert Boyer tau ua dab tsi yuav yog ib qho ntawm thawj qhov kev sim tshuaj genetic engineering, xyoo 1973. Lawv tau pom tias cov noob rau Qav ribosomal RNA tuaj yeem hloov mus rau hauvcov kab mob kab mob thiab nthuav tawm los ntawm lawv.
Paul Berg nrhiav tau dab tsi?
Ua ke nrog nws txoj kev tshawb fawb ntawm tus kab mob qog SV40, xyoo 1972, Paul Berg tau ua tiav hauv kev ntxig DNA los ntawm cov kab mob mus rau tus kab mob DNA. Nws thiaj li tsim lub thawj DNA molecule ua los ntawm cov khoom sib txawv. Hom molecule no hu ua "hybrid DNA" lossis "recombinant DNA".
Pom zoo:
Leej twg invented hlau smelting?
Txoj kev loj hlob ntawm cov hlau smelting yog ib txwm ua los ntawm cov neeg Hittites ntawm Anatoliantawm lub hnub nyoog Bronze lig. Nws tau ntseeg tias lawv tswj hwm txoj haujlwm ntawm cov hlau ua haujlwm, thiab lawv lub tebchaws tau ua raws li qhov txiaj ntsig ntawd.
Leej twg invented the dumbwaiter?
Tus neeg kho tshuab dumbwaiter tau tsim los ntawm George W. Cannon, tus neeg tsim khoom hauv New York City. Cannon thawj zaug ua ntaub ntawv rau patent ntawm lub nres nres (US Patent no. 260776) uas yuav siv tau rau ib tug dumbwaiter rau lub ib hlis ntuj 6, 1883.
Leej twg invented renormalization pab pawg?
Renormalization captures xwm tus nyiam los txheeb nws tus kheej rau hauv lub ntiaj teb tseem ceeb ywj pheej. Ob tus kws kho mob, Murray Gell-Mann thiab Francis Low Francis Low Francis Eugene Low (Lub Kaum Hli 27, 1921 - Lub Ob Hlis 16, 2007) yog ib tus kws tshawb fawb Asmeskas txoj kev xav.
Leej twg invented lub pratfall?
Psychologist Elliot Aronson Elliot Aronson Elliot Aronson (yug Lub Ib Hlis 9, 1932) yog ib tus kws paub txog kev puas siab puas ntsws Asmeskas uas tau ua cov kev sim ntawm txoj kev xav ntawm kev paub tsis meej, thiab tsim lub chav kawm Jigsaw, ib txoj kev qhia kev sib koom tes uas pab txhawb kev kawm thaum txo cov kev sib cav sib ceg thiab kev ntxub ntxaug.
Leej twg invented the typefaces?
thawj hom tsim puv sijhawm yog Frederic Goudy, uas tau pib thaum xyoo 1920. Nws tsim cov cim cim uas tseem siv tau, suav nrog Copperplate Gothic thiab Goudy Old Style (raws li Jenson's Old Style typefaces). Leej twg tsim thawj hom ntawv niaj hnub?
