Vim li cas eukaryotic genomes loj dua?
Vim li cas eukaryotic genomes loj dua?

Video: Vim li cas eukaryotic genomes loj dua?

Video: Vim li cas eukaryotic genomes loj dua?
Video: Building a Synthetic Eukaryotic Genome Design, Construction and Application 2024, Kaum ib hlis
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Gene Tsev Neeg thiab Pseudogenes

Lwm qhov ua rau muaj qhov loj ntawm qhov loj eukaryotic genomes yog tias qee cov noob tau rov qab ntau zaus. Whereas feem ntau cov noob prokaryotic yog sawv cev ib zaug xwb genome , ntau eukaryotic tshuaj Cov noob muaj nyob hauv ntau daim ntawv, hu ua gene family.

Hais txog qhov no, vim li cas genomes sib txawv hauv qhov loj?

Xyoo 1991, John W. Drake tau thov ib txoj cai dav dav: tias qhov kev hloov pauv hauv ib genome thiab nws loj yog inversely correlated. Txoj cai no tau pom tias yog kwv yees qhov tseeb rau qhov yooj yim cov genomes xws li cov kab mob DNA thiab cov kab mob unicellular. Nws lub hauv paus yog tsis paub.

Ib tug kuj yuav nug, ua li cas prokaryotic thiab eukaryotic genomes txawv? Prokaryotes yog feem ntau haploid, feem ntau muaj ib lub voj voog chromosome pom hauv nucleoid. Eukaryotes yog diploid; DNA tau teeb tsa rau hauv ntau cov kab chromosomes pom hauv cov nucleus. Prokaryotic thiab eukaryotic genomes ob leeg muaj noncoding DNA, kev ua haujlwm uas tsis nkag siab zoo.

Ntawm no, dab tsi yog eukaryotic genomes?

Eukaryotic genomes yog tsim los ntawm ib los yog ntau tshaj linear DNA chromosomes. Zoo li cov kab mob uas lawv pib los ntawm, mitochondria thiab chloroplasts muaj cov chromosome ncig. Tsis zoo li prokaryotes, eukaryotes muaj exon-intron lub koom haum ntawm cov protein coding noob thiab qhov sib txawv ntawm DNA rov ua dua.

Dab tsi yog qhov nyuaj ntawm eukaryotic cell?

Zoo tag nrho lub neej peb pom txhua hnub - suav nrog cov nroj tsuag thiab tsiaj txhu - belongs rau peb lub npe, Eukaryota. Eukaryotic hlwb muaj ntau complex tshaj prokaryotes, thiab DNA yog linear thiab pom nyob rau hauv ib tug nucleus. Eukaryotic hlwb khav theeb lawv tus kheej "cov nroj tsuag fais fab", hu ua mitochondria.

Pom zoo: