Video: Puas muaj DNA ntau npaum li cas tib neeg koom nrog cov tsiaj nyeg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kom meej meej, acorn worms saib tsis muaj dab tsi zoo li neeg; tus worms tsis muaj ceg tawv thiab ua tsis taus pa los ntawm slits hauv lawv lub plab. Tab sis lawv qhia kwv yees li 14,000 gene nrog tib neeg , cov kws tshawb fawb pom, suav nrog txog 70 feem pua ntawm cov tib neeg genome.
Yog li ntawd, lub ntiaj teb thiab tib neeg zoo li cas?
Earthworms tsis muaj hlwb zoo li tib neeg , tab sis lawv muaj cov qauv hauv nruab nrab hauv lub paj hlwb hu ua cerebral ganglion uas ua cov ntaub ntawv. Cov qauv no txuas mus rau lwm lub cev ntawm lub ventral paj qaum, zoo sib xws rau peb lub cev. Lub paj hlwb no yog segmented, xwb nyiam tus earthworm.
Kuj Paub, ntau npaum li cas DNA peb koom nrog cov nroj tsuag? Peb qhia kwv yees li 15 feem pua ntawm peb DNA nrog qhov no cog.
Kuj kom paub yog, ntau npaum li cas DNA ua txiv tsawb qhia rau tib neeg?
Tib neeg txhob cia li qhia feem pua siab ntawm DNA nrog txiv tsawb - peb tseem qhia 85 feem pua DNA nrog nas thiab 61 feem pua ntawm cov txiv hmab txiv ntoo ya.
Peb puas muab 50 ntawm peb DNA nrog txiv tsawb?
Cov 50 feem pua ntawm cov neeg thiab txiv tsawb roughly txhais tau tias ib nrab ntawm peb genes muaj counterparts nyob rau hauv txiv tsawb . Piv txwv li, peb ob leeg muaj qee hom noob uas cov lej rau kev loj hlob ntawm tes, txawm tias cov no tsis tas ua los ntawm tib yam. DNA ua ntu zus.
Pom zoo:
Cov ntaub ntawv ntau npaum li cas hauv tib neeg genome?
Lub 2.9 billion lub hauv paus khub ntawm haploid tib neeg genome sib haum mus rau qhov siab tshaj plaws ntawm 725 megabytes ntawm cov ntaub ntawv, txij li txhua tus khub tuaj yeem raug coded los ntawm 2 cov khoom. Txij li thaum ib tus neeg genomes sib txawv los ntawm tsawg dua 1% ntawm ib leeg, lawv tuaj yeem poob qis qis rau kwv yees li 4 megabytes
Cov tsiaj twg muaj DNA ze tshaj rau tib neeg?
Puas tau txij li thaum cov kws tshawb fawb tau ua raws cov kab mob genome hauv xyoo 2005, lawv tau paub tias tib neeg sib koom txog 99% ntawm peb cov DNA nrog chimpanzees, ua rau lawv peb cov txheeb ze nyob ze
Qhov feem pua ntawm DNA tau koom nrog cov tswv cuab ntawm tib neeg?
Muaj ntau tshaj peb lab qhov sib txawv ntawm koj cov genome thiab lwm tus. Ntawm qhov tod tes, peb txhua tus yog 99.9 feem pua zoo tib yam, DNA-wise. (Los ntawm qhov sib txawv, peb tsuas yog kwv yees li 99 feem pua zoo ib yam li peb cov txheeb ze ze tshaj plaws, chimpanzees.)
DNA ntau npaum li cas peb koom nrog apes?
Puas tau txij li thaum cov kws tshawb fawb tau ua raws cov kab mob genome hauv xyoo 2005, lawv tau paub tias tib neeg sib koom txog 99% ntawm peb cov DNA nrog chimpanzees, ua rau lawv peb cov txheeb ze nyob ze
Puas yog cov ntsiab lus uas muaj cov tshuaj lom neeg zoo sib xws yuav pom nyob rau tib lub sijhawm lossis hauv tib pab pawg piav qhia koj cov lus teb?
Qhov no yog vim hais tias cov tshuaj muaj zog nyob ntawm tsis muaj valence electrons. Raws li nyob rau hauv ib pawg tag nrho cov ntsiab lus muaj tib yam tsis muaj valence electron uas yog vim li cas lawv muaj cov tshuaj zoo sib xws tab sis nyob rau hauv ib lub sij hawm tsis muaj valence electron sib txawv uas yog vim li cas lawv txawv nyob rau hauv chemical zog