Ib qho kev hloov pauv tuaj yeem hloov pauv tag nrho DNA ib ntus. Hloov ib qho purine lossis pyrimidine tuaj yeem hloov cov amino acid uas cov nucleotides code rau. Kev hloov pauv ntawm cov ntsiab lus tuaj yeem tshwm sim los ntawm kev hloov pauv hloov pauv tshwm sim thaum lub sijhawm DNA rov ua dua. Tus nqi ntawm kev hloov pauv tuaj yeem nce los ntawm mutagens
Yuav ua li cas rau DNA hauv kev hloov pauv?
Txoj kev hloov pauv yog ib pawg loj ntawm kev hloov pauv uas piav qhia txog kev hloov pauv hauv ib qho nucleotide ntawm DNA, xws li cov nucleotide hloov mus rau lwm qhov nucleotide, lossis cov nucleotide raug tshem tawm, lossis ib zaug nucleotide tau ntxig rau hauv DNA uas ua rau DNA txawv ntawm cov noob caj noob ces ib txwm los yog tsiaj qus…
Qhov kev hloov pauv ua li cas?
Txoj kev hloov pauv, hloov pauv hauv cov noob uas ib khub hauv DNA ib ntus hloov pauv Cov ntsiab lus hloov pauv feem ntau yog tshwm sim los ntawm kev ua yuam kev thaum lub sijhawm DNA rov ua dua, txawm hais tias hloov kho DNA, xws li los ntawm kev raug X-rays los yog rau ultraviolet hluav taws xob, kuj tuaj yeem ua rau muaj kev hloov pauv.
Dab tsi ua rau DNA hloov pauv?
Kev hloov pauv yog qhov hloov pauv hauv DNA ib ntus. Kev hloov pauv tuaj yeem tshwm sim los ntawm DNA luam qhov yuam kev ua thaum lub sijhawm faib ntawm tes, raug ionizing hluav taws xob, raug rau cov tshuaj hu ua mutagens, lossis kis los ntawm cov kab mob.
Vim li cas gene mutation hu ua point mutation?
Nyob rau hauv noob kev hloov, ib allele ntawm ib tug noob hloov mus rau ib tug sib txawv allele. Vim tias qhov kev hloov pauv no tshwm sim hauv ib lub noob thiab daim duab qhia chaw rau ib qho chaw chromosomal ("point"), kev hloov pauv noob qee zaum hu ua qhov hloov pauv.
