2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Yooj yim prokaryotes thiab eukaryotes (xws li fungi thiab protozoa) tsis muaj lawv. Nyob rau hauv complex multicellular kab mob (xws li nroj tsuag thiab vertebrates), introns yog hais txog 10-fold ntev tshaj lub exons, lub active, coding qhov chaw ntawm lub genome. Qhov sib lawv liag thiab ntev ntawm introns sib txawv sai heev nyob rau lub sij hawm evolutionary.
Vim li cas thiaj tsis muaj introns hauv prokaryotes?
Kev piav qhia: Cov lus teb raug yog tias prokaryotes tsuas muaj exons, whereas eukaryotes muaj exons thiab introns. Yog li ntawd, nyob rau hauv eukaryotes, thaum mRNA yog transcribed los ntawm DNA, lub introns yuav tsum tau txiav tawm ntawm lub tshiab synthesized mRNA strand. Cov exons, los yog coding sequences, ces koom ua ke.
Puas prokaryotic chromosomes muaj introns?
Prokaryotic DNA:
Puas pom dawb hauv lub cytoplasm (nyob rau hauv ib cheeb tsam hu ua nucleoid)…
Puas introns tsawg hauv prokaryotes?
Txawm hais tias muaj ntau hauv qee cov genomes organellar, nws tus kheej-splice introns yog qhov tsis tshua muaj nyob rau lwm qhov, thiab zoo li tsis tuaj yeem los ntawm feem ntau cov genomes prokaryotic nrog rau ntau eukaryotic nuclear genomes.
Puas muaj introns nyob hauv eukaryotes?
Tag nrho cov eukaryotic genomes nqaintrons ua ib feem ntawm qee cov qauv noob thiab cov introns yuav tsum raug tshem tawm los ntawm cov tshuab molecular complex hu ua spliceosome muaj tsib snRNAs thiab ntau dua 150.proteins [1, 2].
Pom zoo:
Puas yog actinomycetes prokaryotes lossis eukaryotes?
Ob qho tib si kuj txawv ntawm cov fungi yog eukaryotes thaum Actinomycetes yog prokaryotes. Raws li prokaryotes, Actinomycetes tsis muaj nuclear-bound organelles (xws li nucleus, Golgi apparatus, thiab lwm yam) uas muaj nyob rau hauv cov kab mob fungal.
Introns hauv noob yog quizlet?
Introns yog noncoding seem ntawm RNA cov ntawv teev lus, lossis DNA encoding nws, uas tau sib cais ua ntej RNA molecule raug txhais ua cov protein. … Ib qho exon yog ib feem ntawm cov noob uas yuav dhau los ua ib feem ntawm qhov kawg paub tab RNA tsim los ntawm cov noob ntawd tom qab introns tau raug tshem tawm los ntawm RNA splicing.
Puas prokaryotes puas muaj okazaki tawg?
Okazaki fragments yog tam sim no hauv ob qho tib si prokaryotes thiab eukaryotes. DNA molecules nyob rau hauv eukaryotes txawv ntawm cov voj voog molecules ntawm prokaryotes nyob rau hauv uas lawv loj dua thiab feem ntau muaj ntau lub hauv paus chiv keeb ntawm replication.
Puas yog cov prokaryotes sib txawv thiab dav?
Cov kab mob uas muaj cov kab mob prokaryotic tau muab cais ua ob Cov kab mob thiab Archaeayog cov kab mob sib txawv thiab nthuav dav tshaj plaws 3. Qhov twg yog cov prokaryotes ntau tshaj plaws thiab ntau haiv neeg? Tus domains Bacteria thiab Archaea yog cov uas muaj cov kab mob prokaryotic.
Puas yog thaj tsam introns tsis tau txhais?
Qhov laj thawj yog vim li cas introns tsis suav tias yog thaj chaw tsis tau txhaisyog tias cov introns tau sib cais tawm hauv cov txheej txheem ntawm RNA splicing. Cov introns tsis suav nrog hauv mRNA molecule paub tab uas yuav raug kev txhais lus thiab yog li suav hais tias tsis yog-protein-coding RNA.
