Qhov txawv ntawm qhov sib txawv thiab asymmetric karyotype yog qhov sib txawv ntawm karyotype qhia qhov sib txawv me me ntawm cov chromosomes me thiab loj tshaj plaws hauv cov teeb thaum asymmetric karyotype qhia qhov sib txawv loj ntawm cov chromosomes me thiab loj tshaj plaws hauv cov teeb.
A karyotype yog daim duab uas qhia tus lej tseeb thiab cov qauv ntawm tag nrho cov chromosomes hauv lub nucleus ntawm eukaryotic cell. Karyotyping yog cov txheej txheem ua los ntawm cov kws kho mob los tshuaj xyuas tag nrho cov chromosomes hauv cov nucleus. Chromosomes pom tsuas yog thaum lub sijhawm metaphase ntawm cell faib. Karyotypes qhia cov yam ntxwv ntawm txhua tus chromosome. Ntxiv mus, karyotypes muaj txiaj ntsig zoo hauv kev kawm chromosome banding qauv. Tsis tas li ntawd, karyotypes pab txhawm rau txheeb xyuas cov chromosomal aberrations. Tsis tas li ntawd xwb, karyotypes muaj txiaj ntsig zoo hauv kev kuaj mob ua ntej yug menyuam. Muaj ob hom karyotypes li symmetric thiab asymmetric karyotype. Ib tug symmetric karyotype muaj ntau metacentric chromosomes thaum lub asymmetric karyotype muaj ntau acrocentric chromosomes.
Dab tsi yog Symmetric Karyotype?
A symmetric karyotype yog karyotype uas qhia qhov sib txawv me me ntawm cov chromosomes me thiab loj tshaj plaws hauv cov teeb. Nws muaj ntau metacentric chromosomes. Tag nrho cov chromosomes yog kwv yees li qhov loj me. Ntxiv mus, lawv muaj xov xwm lossis sub-mediam centromeres. Symmetric karyotype tsis suav hais tias yog qhov zoo tshaj plaws piv rau asymmetric karyotype. Qhov tseeb, nws sawv cev rau lub xeev qub.
Daim duab 01: Poj Niam Karyotype
Asymmetric Karyotype yog dab tsi?
Asymmetric karyotype yog karyotype uas qhia qhov sib txawv loj ntawm cov chromosomes me thiab loj tshaj plaws ntawm cov teeb. Nws muaj tsawg dua metacentric chromosomes. Feem ntau ntawm cov chromosomes yog acrocentric. Asymmetric karyotype yog suav tias yog ib qho tseem ceeb tshaj plaws. Nws tau hloov zuj zus los ntawm kev hloov pauv ntawm cov qauv chromosome. Hauv cov paj ntoo, cov kws tshawb fawb tau pom qhov tseem ceeb tshaj plaws ntawm asymmetric karyotype. Ntxiv mus, qhov nce asymmetric karyotype yog txuam nrog tshwj xeeb zygomorphic paj. Ginkgo biloba kuj muaj asymmetric karyotype.
Dab tsi zoo sib xws ntawm Symmetric thiab Asymmetric Karyotype?
- Symmetric thiab asymmetric karyotype yog ob hom karyotypes raws li qhov sib txawv ntawm cov chromosomes me thiab loj tshaj plaws hauv cov teeb.
- Lub tswv yim ntawm symmetrical lossis asymmetrical yog tsim los ntawm Levitzky hauv xyoo 1931.
Qhov txawv ntawm Symmetric thiab Asymmetric Karyotype yog dab tsi?
A symmetric karyotype yog karyotype qhia qhov sib txawv me me ntawm cov chromosomes me thiab loj tshaj plaws hauv cov teeb. Lub caij no, ib qho asymmetric karyotype yog karyotype uas qhia qhov sib txawv loj ntawm cov chromosomes me thiab loj tshaj plaws ntawm cov teeb. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm symmetrical thiab asymmetric karyotype. Tsis tas li ntawd, symmetric karyotype muaj ntau metacentric chromosomes thaum asymmetric karyotype muaj ob peb metacentric chromosomes. Tab sis, nws muaj ntau acrocentric chromosomes.
Cov hauv qab no infographic tabulates ntau qhov sib txawv ntawm symmetric thiab asymmetric karyotype.
Summary – Symmetric vs Asymmetric Karyotype
Ib karyotype tuaj yeem ua tau zoo lossis asymmetrical. Ib qho asymmetric karyotype yog suav tias yog qhov tseem ceeb tshaj plaws piv rau symmetric karyotype. Symmetric karyotype muaj ntau metacentric chromosomes. Tsis tas li ntawd, tag nrho nws cov chromosomes yog kwv yees li sib npaug ntawm qhov loj me. Thiab, lawv muaj nruab nrab lossis sub-median centromeres. Nyob rau hauv sib piv, asymmetric karyotype muaj ob peb metacentric chromosomes. Feem ntau ntawm cov chromosomes yog acrocentric nyob rau hauv asymmetric karyotype. Tsis tas li ntawd, cov chromosomes txawv qhov loj thiab cov haujlwm ntawm cov centromeres. Yog li, qhov no piav qhia qhov sib txawv ntawm qhov sib txawv thiab asymmetric karyotype.
