Video: Qhov xaus ntawm Avery qhov kev sim yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Avery thiab nws cov npoj yaig tau xaus lus tias cov protein tsis tuaj yeem yog qhov hloov pauv. Tom qab ntawd, lawv tau kho qhov sib xyaw nrog DNA-destroying enzymes. Lub sij hawm no lub colonies ua tsis tau tejyam hloov. Avery xaus lus tias DNA yog cov khoom siv caj ces ntawm lub xovtooj.
Kuj nug, qhov xaus ntawm Oswald Avery qhov kev sim yog dab tsi?
Nyob rau hauv ib qho yooj yim heev kev sim , Oswald Avery's pab pawg tau pom tias DNA yog "txoj cai hloov pauv." Thaum cais tawm ntawm ib hom kab mob, DNA tuaj yeem hloov pauv lwm hom kab mob thiab muab cov yam ntxwv rau qhov thib ob hom. DNA tau nqa cov ntaub ntawv keeb kwm yav dhau los.
Ib yam li ntawd, Avery tau ua pov thawj li cas tias DNA tuaj yeem nqa cov ntaub ntawv caj ces? Oswald Avery , Colin MacLeod, thiab Maclyn McCarty tau qhia tias DNA (tsis muaj protein ntau) ua tau hloov cov khoom ntawm cov hlwb, qhia meej txog cov tshuaj lom neeg ntawm noob . Avery , MacLeod thiab McCarty tau txheeb xyuas DNA raws li "txoj cai hloov pauv" thaum kawm Streptococcus pneumoniae, cov kab mob uas ua tau ua rau mob ntsws.
Hauv qhov no, lub hom phiaj ntawm Avery qhov kev sim yog dab tsi?
Nws xav txiav txim siab seb cov kab mob twg hauv cov kab mob tua hluav taws kub yog qhov tseem ceeb tshaj plaws rau kev hloov pauv. Nws tau rho tawm ib qho sib xyaw ntawm ntau yam molecules los ntawm cov kab mob tua hluav taws kub uas tau ua tib zoo kho nws nrog cov enzymes.
Hershey thiab Chase xaus li cas?
Hershey thiab Chase xaus lus tias DNA, tsis yog protein, yog cov khoom siv caj ces. Lawv txiav txim siab tias lub tsho tiv thaiv protein tau tsim nyob ib ncig ntawm cov kab mob bacteriophage, tab sis hais tias cov DNA sab hauv yog qhov uas tau muab nws lub peev xwm los tsim cov kab mob hauv cov kab mob.
Pom zoo:
Qhov xaus ntawm qhov ntsuas nplaim taws yog dab tsi?
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