Video: Griffith thiab Avery nrhiav tau dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Frederick Griffith thiab Oswald Avery yog cov kws tshawb fawb tseem ceeb hauv cov nrhiav pom ntawm DNA. Griffith yog ib tug kws kho mob British thiab kws tshuaj caj ces. Xyoo 1928, niaj hnub no hu ua Griffith cov kev sim, nws nrhiav pom dab tsi nws hu ua "txoj cai hloov pauv" uas ua rau muaj qub txeeg qub teg.
Tom qab ntawd, Griffith nrhiav tau dab tsi?
Frederick Griffith yog British bacteriologist (tus kws tshawb fawb uas kawm cov kab mob). Griffith lub npe nrov xyoo 1928 kev sim qhia peb tias cov kab mob tuaj yeem hloov pauv lawv txoj haujlwm thiab daim ntawv los ntawm kev hloov pauv. Transformation yog tus txheej txheem uas piav txog ib yam uas hloov mus rau lwm qhov.
Tsis tas li ntawd, Griffith pab tau li cas rau kev tshawb pom DNA? 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. Xyoo 1920, Frederick Griffith ua qhov tseem ceeb nrhiav pom . Griffith cov Cov txiaj ntsig kev sim. Griffith qhia tau hais tias ib yam khoom yuav raug xa mus rau cov kab mob tsis muaj mob thiab ua rau lawv tuag taus.
Ntawm no, Avery nrhiav tau dab tsi?
Oswald Theodore Avery Jr. Avery yog thawj tus kws tshawb fawb molecular biologists thiab yog tus thawj coj hauv kev tiv thaiv kab mob, tab sis nws paub zoo tshaj plaws rau qhov kev sim (tshaj tawm xyoo 1944 nrog nws cov neeg ua haujlwm ua haujlwm. Colin MacLeod thiab Maclyn McCarty ) uas cais DNA raws li cov khoom ntawm cov noob caj noob ces thiab chromosomes raug tsim.
Qhov kev sim ntawm Griffith Avery thiab Hershey Chase tau ua dab tsi?
Kev tsim txom kev sim los ntawm Griffith , Avery , Hershey , thiab Chase disproved qhov kev xav tias cov proteins yog cov khoom siv caj ces. Qhov kev puas tsuaj no tau tshwm sim los ntawm ib qho kev sib tw kev sim nrog cov kab mob thiab cov kab mob bacteriophages, lossis cov kab mob uas kis kab mob.
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