Koj txhais li cas los ntawm genome?
Koj txhais li cas los ntawm genome?

Video: Koj txhais li cas los ntawm genome?

Video: Koj txhais li cas los ntawm genome?
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A genome yog ib qho kab mob tag nrho ntawm DNA, suav nrog tag nrho nws cov noob. Txhua genome muaj tag nrho cov ntaub ntawv xav tau los tsim thiab tswj lub cev. Nyob rau hauv tib neeg, ib daim qauv ntawm tag nrho genome -ntau tshaj 3 billion DNA puag khub-yog muaj nyob rau hauv tag nrho cov hlwb uas muaj ib tug nucleus.

Ib yam li ntawd, tib neeg nug, dab tsi yog genome yooj yim txhais?

Cov genome ntawm cov kab mob yog tag nrho ntawm nws cov ntaub ntawv keeb kwm uas tau muab tso rau hauv nws cov DNA (lossis, rau qee tus kab mob, RNA). Qhov no suav nrog cov noob thiab cov tsis-coding sequences ntawm DNA. Lub sij hawm tau coined nyob rau hauv 1920. Lub genome ntawm lub teeb chromosome haploid tsuas yog ib qho piv txwv ntawm tag nrho cov caj ces ntawm ib hom.

Ib sab saum toj no, dab tsi yog lub luag haujlwm ntawm genome? Qhov tseem ceeb muaj nuj nqi ntawm genome yog khaws cia, nthuav tawm, thiab nthuav tawm cov ntaub ntawv caj ces uas ua rau lub xovtooj ntawm kev tsim vaj tsev thiab kev ua haujlwm. Txawm li cas los xij, lub genome kuj yog ib qho tseem ceeb ntawm cov qauv ntawm cov cell.

Hauv qhov no, qhov piv txwv ntawm genome yog dab tsi?

Genome txhais tau tias yog tag nrho ntawm ib tug somatic cell cov ntaub ntawv caj ces, los yog ib pawg ntawm haploid chromosomes. Ib piv txwv ntawm genome yog dab tsi txiav txim siab lub cev yam ntxwv ntawm ib tug neeg.

Dab tsi ua rau genome?

DNA yog cov molecule uas yog cov khoom tsim los ntawm txhua lub hlwb. Genes yog ua ntawm DNA, thiab yog li ntawd genome nws tus kheej. Ib lub noob muaj DNA txaus rau kev cai rau ib qho protein, thiab a genome tsuas yog cov lej tag nrho ntawm lub cev DNA.

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