Cov ntsiab lus hauv cov txheej txheem no (25) Qhov txiaj ntsig ntawm Frederick Griffith qhov kev sim ua rau nws ntseeg hauv "txoj cai hloov pauv"? Mus txhaj tshuaj tuag S thiab muaj kab mob R tuag.
Dab tsi yog qhov tshwm sim ntawm Frederick Griffith kev sim?
Griffith xaus lus tias hom II-R muaj been "hloov" rau hauv kev tuag III-S hom los ntawm "txoj cai hloov pauv"uas yog qee yam ntawm cov neeg tuag III- S lim kab mob. Niaj hnub no, peb paub tias "txoj cai hloov pauv" Griffith pom yog DNA ntawm cov kab mob III-s strain.
Dab tsi tshwm sim hauv Griffith qhov kev sim?
Griffith's Experiment yog ib qho kev sim ua tiav xyoo 1928 los ntawm Frederick Griffith.… Hauv qhov kev sim no, kab mob los ntawm hom III-S raug tua los ntawm tshav kub, thiab lawv cov seem tau ntxiv rau II-R hom kab mob Txawm tias tsis ua mob rau cov nas ntawm lawv tus kheej, qhov sib xyaw ntawm ob leeg tua tau nas.
Qhov xaus ntawm Griffith qhov kev sim yog dab tsi?
Griffith xaus lus tias cov kab mob R-strain yuav tsum tau coj qhov nws hu ua "txoj cai hloov pauv" los ntawm cov kab mob S kub tua, uas tso cai rau lawv "hloov" mus rau hauv cov kab mob du-coated thiab ua virulent.
Frederick Griffith kawm li cas txog kev hloov pauv ntawm DNA?
Griffith Tshawb Nrhiav Cov Khoom Txheej Txheem
Nws yog kawm txog ob hom kab mob sib txawv, hu ua R (ntxhib) hom thiab S (nruj) homNws txhaj tshuaj ob hom kab rau nas. … Nws hu ua qhov kev hloov pauv no, raws li ib yam dab tsi yog "hloov" cov kab mob los ntawm ib hom kab mob mus rau lwm hom.
