A plasmid yog ib qho me me, ncig, ob npaug-stranded DNA molecule uas txawv ntawm lub cell chromosomal DNA. Plasmids ib txwm muaj nyob hauv cov kab mob hlwb, thiab lawv kuj tshwm sim hauv qee cov eukaryotes. Feem ntau, cov noob muaj nyob rau hauv plasmids muab cov kab mob uas muaj txiaj ntsig zoo, xws li tshuaj tua kab mob.
Dab tsi yog qhov txhais zoo tshaj plaws ntawm plasmid?
A plasmid yog ib qho me me, feem ntau ncig DNA molecule pom hauv cov kab mob thiab lwm cov hlwb. Plasmids yog cais tawm ntawm cov kab mob chromosome thiab rov ua dua ntawm nws tus kheej. Lawv feem ntau nqa tsuas yog cov noob me me xwb, tshwj xeeb yog qee qhov cuam tshuam nrog tshuaj tua kab mob.
Plasmid yog dab tsi thiab nws qhov piv txwv?
Plasmids yog feem ntau siv cov kab mob cloning vectors. Cov cloning vectors no muaj ib qhov chaw uas tso cai rau DNA fragments tso, piv txwv li ib tug ntau cloning site los yog polylinker uas muaj ob peb feem ntau siv txwv qhov chaw uas DNA fragments yuav ligated.
Plasmid siv rau dab tsi?
Plasmids yog qhov tseem ceeb rau kev txhim kho molecular biotechnology. Lawv ua lub tsheb xa khoom, lossis vectors, qhia txog DNA txawv teb chaws rau cov kab mob. Siv plasmids rau DNA xa khoom pib thaum xyoo 1970 thaum DNA los ntawm lwm yam kab mob yog thawj 'txiav thiab muab tso rau hauv cov chaw tshwj xeeb hauv plasmid DNA.
Plasmid luv teb yog dab tsi?
Plasmids yog extra-chromosomal DNAmolecules uas rov ua dua tshiab ntawm chromosomal DNA. Nws muaj nws tus kheej keeb kwm ntawm replication. Nws nqa ntau cov noob uas muaj txiaj ntsig zoo rau cov kab mob kom muaj sia nyob. Nws muaj cov tshuaj tua kab mob tiv thaiv kab mob. Nws yog siv los ua vectors hauv genetic engineering.
