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Video: Yuav ua li cas tshwm sim thaum duplication chromosomal mutation?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Duplication yog hom kev hloov pauv uas suav nrog kev tsim ib lossis ntau daim ntawv luam ntawm cov noob lossis thaj tsam ntawm a chromosome . Gene thiab chromosome duplications tshwm sim nyob rau hauv tag nrho cov kab mob, txawm hais tias lawv yog tshwj xeeb tshaj yog tseem ceeb ntawm cov nroj tsuag. Gene luam tawm yog ib qho tseem ceeb mechanism uas evolution tshwm sim.
Yog li ntawd, dab tsi yog duplication nyob rau hauv chromosomal mutation?
Kev kho mob txhais ntawm Chromosome duplication Chromosome duplication : Ib feem ntawm a chromosome hauv duplicate. Ib yam ntawm kev hloov pauv koom nrog kev tsim ib lossis ntau daim ntawv luam ntawm ib qho ntawm DNA, suav nrog qee zaum cov noob lossis txawm tias tag nrho chromosome . A luam tawm yog qhov opposite ntawm ib tug deletion.
Ib yam li ntawd, chromosomal mutation tshwm sim li cas? Kev hloov pauv ua tau tshwm sim ua ntej, thaum, thiab tom qab mitosis thiab meiosis. Kev hloov pauv kuj tshwm sim los ntawm kev hloov pauv noob thiab lwm yam kev hloov pauv loj hauv DNA ntu ntawm a chromosome . Kev hloov pauv yog txav ntawm ib ntu ntawm DNA ntawm ib qho chaw mus rau lwm qhov hauv ib qho chromosome los yog nruab nrab chromosomes.
Kuj paub, qhov piv txwv ntawm kev hloov pauv hloov pauv yog dab tsi?
Lub sij hawm " luam tawm " tsuas yog txhais tau tias yog ib feem ntawm chromosome luam tawm , los yog tam sim no nyob rau hauv 2 daim ntawv luam. Ib piv txwv ntawm qhov tsis tshua muaj kab mob caj ces ntawm luam tawm hu ua Pallister Killian syndrome, uas yog ib feem ntawm #12 chromosome luam tawm.
Dab tsi yog 4 hom kev hloov pauv?
Muaj peb hom DNA Mutations: lub hauv paus hloov, tshem tawm thiab ntxig
- Kev hloov pauv hauv paus. Ib qho kev hloov pauv yog hu ua point mutations, nco qab qhov kev hloov pauv ntawm Glu --- Val uas ua rau mob qog nqaij hlav.
- Kev tshem tawm.
- Insertions.
Pom zoo:
Yuav ua li cas tshwm sim rau tam sim no nyob rau hauv ib tug parallel circuits thaum ntxiv qhov muag teev?
Raws li ntau qhov muag tau ntxiv, qhov tam sim no nce. Raws li ntau resistors ntxiv nyob rau hauv parallel, tag nrho tam sim no lub zog nce. Yog li ntawd, tag nrho cov tsis kam ntawm Circuit Court yuav tsum tau txo. Qhov tam sim no nyob rau hauv txhua lub teeb yog tib yam vim hais tias tag nrho cov qhov muag teev glowed nrog tib brightness
Tus qauv yuav pab nrhiav qhov tshwm sim ntawm qhov kev tshwm sim sib xyaw li cas?
Lub ntsiab lus ntawm Qhov Muaj Peev Xwm Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej Txheej yog ib qho uas muaj ntau tshaj li qhov ua tau. Kev txiav txim siab qhov yuav tshwm sim ntawm qhov kev tshwm sim sib xyaw suav nrog kev nrhiav cov lej ntawm qhov tshwm sim ntawm tus kheej cov xwm txheej thiab, yog tias tsim nyog, tshem tawm qhov muaj feem sib tshooj
Yuav ua li cas tshwm sim thaum ib tug tam sim no nqa coil muab tso rau hauv ib tug magnetic teb?
Yog tias tus neeg nqa khoom nqa tam sim no tau muab tso rau hauv qhov chaw sib nqus, nws ntsib lub zog Lorentz (tshwj tsis yog lub kaum sab xis ntawm qhov ntws ntawm tam sim no thiab cov kab hlau nplaum yog 0 °)
Yuav ua li cas koj pom qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug?
Txhawm rau xam qhov tshwm sim ntawm qhov tshwm sim tshwm sim tsawg kawg ib zaug, nws yuav yog qhov sib ntxiv ntawm qhov xwm txheej tsis tshwm sim. Qhov no txhais tau hais tias qhov tshwm sim ntawm qhov tshwm sim yeej tsis tshwm sim thiab qhov tshwm sim ntawm qhov tshwm sim tsawg kawg ib zaug yuav sib npaug, lossis 100% txoj hauv kev
Yuav ua li cas chromosomal txawv txav tshwm sim?
Tus neeg muaj peb daim qauv ntawm chromosome 21. Trisomy-18 (Edward's Syndrome) tshwm sim peb zaug hauv txhua 10,000 yug. Tus neeg muaj peb daim qauv ntawm chromosome 18. Trisomy-13 (Patau's Syndrome) tshwm sim ob zaug hauv txhua 10,000 yug