Video: Dab tsi yog tib neeg genome tsim los ntawm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tib neeg genome . Cov tib neeg genome yog cov genome ntawm Homo sapiens. Nws yog ua nce ntawm 23 chromosome khub nrog tag nrho ntawm 3 billion DNA puag khub. Muaj 24 qhov txawv tib neeg chromosomes: 22 autosomal chromosomes, ntxiv rau kev sib deev-txiav txim siab X thiab Y chromosomes.
Ib yam li ntawd ib tug yuav nug, tib neeg muaj pes tsawg genes?
Ib txhia noob ua raws li cov lus qhia los ua cov molecules hu ua proteins. Txawm li cas los xij, ntau cov noob tsis code rau cov protein. Hauv tib neeg , noob Nws txawv ntawm qhov loj me los ntawm ob peb puas DNA bases mus rau ntau tshaj 2 lab bases. Cov Tib neeg Genome Project kwv yees li ntawd tib neeg muaj ntawm 20,000 thiab 25,000 noob.
Ib sab saum toj no, ntau npaum li cas ntawm tib neeg genome nkag siab? Cov tib neeg genome muaj nyob ib ncig ntawm 20,000 noob , uas yog, stretches ntawm DNA uas encode proteins. Tab sis cov no noob tus account tsuas yog kwv yees li 1.2 feem pua ntawm tag nrho genome . Lwm qhov 98.8 feem pua yog hu ua noncoding DNA.
Kuj Paub, qhov piv txwv ntawm genome yog dab tsi?
Genome txhais tau tias yog tag nrho ntawm cov xov tooj ntawm tes somatic cov ntaub ntawv caj ces, lossis ib pawg ntawm cov chromosomes haploid. Ib piv txwv ntawm genome yog dab tsi txiav txim siab lub cev yam ntxwv ntawm ib tug neeg.
Puas yog tib neeg muaj tib lub genome?
Cov tib neeg genome feem ntau yog cov ib yam hauv tag nrho neeg. Tab sis muaj variations nyob rau hauv genome . Qhov kev hloov pauv caj ces no suav txog li 0.001 feem pua ntawm txhua tus neeg DNA thiab ua rau muaj qhov sib txawv ntawm qhov tsos thiab kev noj qab haus huv. Cov neeg uas muaj kev sib raug zoo muaj ntau zoo sib xws DNA.
Pom zoo:
Puas yog tib neeg tsim los ntawm qhov teeb meem?
Tau kawg lawv. Yog tias tib neeg tsis tsim teeb meem, tab sis antimatter, koj yuav tsis muaj nyob tam sim no. Thaum kawg, peb tsis tuaj yeem txiav txim siab tiag tiag seb peb puas yog qhov teeb meem lossis tsis muaj teeb meem, tab sis raws li cov ntsiab lus tam sim no rau ob nqe lus, tib neeg yog qhov tseem ceeb
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