Video: Thaum twg Griffith nrhiav tau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
1928
Hais txog qhov no, thaum twg Frederick Griffith nrhiav DNA?
Xyoo 1928, British bacteriologist Frederick Griffith tau ua ntau qhov kev sim siv cov kab mob Streptococcus pneumoniae thiab nas. Griffith tsis yog sim txheeb xyuas cov khoom siv caj ces, tab sis, theej, sim tsim cov tshuaj tiv thaiv kab mob ntsws.
Kuj Paub, Griffith puas pom kev hloov pauv hauv cov kab mob? Griffith cov kev sim yog ib qho kev sim ua tiav xyoo 1928 los ntawm Frederick Griffith . Nws yog ib qho ntawm thawj qhov kev sim qhia tias kab mob tuaj yeem tau txais DNA los ntawm cov txheej txheem hu ua kev hloov pauv . Griffith siv ob hom Streptococcus pneumoniae.
Yog li ntawd, Frederick Griffith tau koom nrog DNA li cas?
Griffith Tshawb nrhiav cov khoom siv Genetic Ntau tus kws tshawb fawb pab txhawb mus rau kev txheeb xyuas ntawm DNA raws li cov khoom siv caj ces. Hauv xyoo 1920, Frederick Griffith ua ib qho kev tshawb pom tseem ceeb. Nws tau kawm ob hom kab mob sib txawv, hu ua R (ntxhib) strain thiab S (nqus) hom. Griffith cov Cov txiaj ntsig kev sim.
Frederick Griffith ua haujlwm qhov twg?
Frederick Griffith yug hauv Hale, Cheshire, England xyoo 1877. Nws yog ib tug ntawm ob tug menyuam yaus thiab ob leeg tau ua haujlwm los ntawm tsoomfwv Askiv ua tus kws kho mob microbiologist. Griffith tau mus kawm Liverpool University, kawm tiav hauv 1901. Nws tuag hauv 1941 hauv London, England los ntawm kev tawm tsam huab cua thaum Ntiaj Teb Tsov Rog II.
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