Qhov Tseem Ceeb Qhov txawv - Acrocentric vs Telocentric Chromosomes
Ib chromosome yog cov xov zoo li cov qauv uas pom nyob rau hauv lub nucleus ntawm eukaryotic cell. Cov chromosomes yog tsim los ntawm cov txheej txheem zoo, compactly teem deoxyribose nucleic acid (DNA) molecules thiab muaj cov noob uas muaj lub luag haujlwm rau kev tsim cov protein ntau. Muaj 23 khub ntawm chromosomes hauv tib neeg, qhov twg 22 khub raug xa mus rau autosomes thiab 1 khub ntawm kev sib deev chromosome. Chromosomes tuaj yeem raug cais raws li cov qauv sib txawv. Thaum chromosomes raug categorized raws li txoj hauj lwm ntawm centromere, muaj 4 hom chromosomes. Lawv yog; Acrocentric chromosomes, Telocentric chromosomes, Metacentric Chromosomes thiab Sub-metacentric Chromosomes. Acrocentric chromosomes yog cov chromosomes uas lub centromere muab tso rau ntawm qhov chaw yog li ua rau ib qho ntev heev thiab ib feem luv luv ntawm p thiab q caj npab. Telocentric chromosomes yog cov chromosomes uas centromere muab tso rau ntawm qhov kawg ntawm chromosome, thiab tsis pom nyob rau hauv ntau hom. Qhov sib txawv tseem ceeb ntawm acrocentric thiab telocentric chromosomes yog nyob ntawm qhov chaw ntawm centromere hauv chromosome. Nyob rau hauv Acrocentric chromosomes, lub centromere yog muab tso rau deb ntawm qhov nruab nrab taw tes muab nce mus rau ib tug heev luv luv thiab ib tug ntev heev feem feem, whereas, nyob rau hauv telocentric chromosomes, lub centromere yog positioned nyob rau hauv lub kawg ntawm chromosome, ua rau ob txhais tes nyuaj yuav txawv.
Acrocentric Chromosomes yog dab tsi?
Acrocentric chromosomes yog cov chromosomes uas lub centromere ntawm chromosomes muab tso rau ntawm ib kawg ntawm chromosome, thiab deb ntawm qhov nruab nrab ntawm chromosome. Qhov chaw ntawm lub centromere no yuav ua rau muaj qhov tshwj xeeb luv luv thiab qhov ntev heev ntawm chromosome.
Lub centromere ntawm chromosome plays lub luag haujlwm tseem ceeb hauv kev tswj hwm tus qauv ntawm chromosome, nrog rau thaum lub sijhawm faib cov cell. Lub centromere yog ib cheeb tsam ntawm DNA uas tuav ob tug muam chromatids ua ke nyob rau hauv qhov chaw. Nws tseem yuav tsum tau thaum lub sij hawm tsim spindle txheej txheem nyob rau hauv lub cell division theem, txawm rau mitosis los yog meiosis.
Cov chromosomes acrocentric muaj ob qho tib si ntawm ib sab caj npab luv heev thiab q caj npab ntev los yog lwm yam. Lawv kuj muaj ib feem ntawm DNA condensed nyob rau hauv qhov kawg ntawm cov chromosome uas tsim ib lub noob ntawm qhov kawg ntawm chromosome uas yog hu ua 'sat - chromosome'. Lub zaum - chromosome yog qhov thib ob constriction pom nyob rau hauv yuav luag tag nrho cov acrocentric chromosomes.
Daim duab 01: Acrocentric Chromosomes
Hauv tib neeg, cov chromosomes suav 13, 15, 21 thiab 22 yog nyob rau hauv kev pom zoo raws li acrocentric chromosomes thiab raug txheeb xyuas thaum karyotyping siv Giemsa staining. Acrocentric chromosomes tau pom thawj zaug hauv genus Acrididae (feem ntau hu ua 'Grasshoppers'). Acrocentric chromosomes kuj koom nrog acrocentric translocations, kuj hu ua Robertsonian translocation, uas ua rau kev loj hlob ntawm kev hloov.
Telocentric Chromosomes yog dab tsi?
Telocentric chromosomes yog hom chromosomes tsawg tshaj plaws. Lawv tsis pom muaj nyob hauv tib neeg. Lawv tuaj yeem pom muaj nyob hauv ob peb hom xws li hauv nas thiab lwm yam. Telocentric chromosomes yog cov chromosomes uas cov centromere muab tso rau ntawm qhov kawg lossis ntawm qhov kawg ntawm chromosome. Vim qhov kev tso ntawm lub centromere no, telocentric chromosomes tsis muaj tus yam ntxwv p thiab q caj npab ntawm cov qauv chromosome. Yog li ntawd, telocentric chromosomes tsuas muaj ib sab caj npab thiab tshwm raws li tus pas nrig zoo li tus qauv.
Lub npe ntawm telocentric chromosome yog muab los ntawm qhov tseeb tias centromere nyob hauv thaj tsam telomeric ntawm chromosomes. Cov qauv ntawm telocentric chromosome tuaj yeem txiav txim siab los ntawm karyotyping tom qab Giemsa staining.
Dab tsi zoo sib xws ntawm Acrocentric thiab Telocentric Chromosomes?
- Ob qho tib si acrocentric thiab telocentric chromosomes yog tsim los ntawm cov DNA loj heev.
- Ob lub qauv yog categorized raws li txoj hauj lwm ntawm lub centromere.
- Ob qho tib si acrocentric thiab telocentric chromosomes tuaj yeem txheeb xyuas los ntawm karyotyping siv Giemsa
- Ob lub qauv tuaj yeem raug sib txawv chromosomal aberrations lossis kev hloov pauv ua rau muaj kev noj qab haus huv sib txawv.
Qhov txawv ntawm Acrocentric thiab Telocentric Chromosomes yog dab tsi?
Acrocentric vs Telocentric Chromosomes |
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| Acrocentric chromosomes yog cov chromosomes uas lub centromere muab tso rau ntawm qhov chaw yog li ua rau ib qho ntev heev thiab ib feem luv luv ntawm p thiab q caj npab. | Telocentric chromosomes yog cov chromosomes uas centromere muab tso rau ntawm qhov kawg ntawm chromosome, thiab tsis pom nyob rau ntau hom. |
| qauv | |
| Ib qho acrocentric chromosome yog tsim los ntawm ib feem luv luv thiab ib feem ntev heev. | Telocentric chromosomes yog pas nrig. |
| Nyob hauv tib neeg | |
| Acrocentric chromosomes muaj nyob hauv tib neeg. | Telocentric chromosomes tsis muaj nyob hauv tib neeg. |
| Kev pom ntawm sat-Chromosomes | |
| Tam sim no hauv acrocentric chromosomes. | Tsis muaj nyob hauv telocentric chromosomes. |
| Nyob ntawm p thiab q caj npab | |
| p thiab q caj npab tuaj yeem pom; Qee zaum, caj npab luv luv tuaj yeem pom tsuas yog hauv acrocentric chromosomes. | Tsuas yog ib sab caj npab tau pom hauv telocentric chromosomes |
Summary – Acrocentric vs Telocentric Chromosomes
Chromosomes ua los ntawm DNA khaws cov ntaub ntawv caj ces ntawm lub cev. Raws li kev tso kawm ntawm centromere, chromosomes tuaj yeem muab faib ua plaub chav kawm loj. Tawm ntawm lawv, acrocentric thiab telocentric chromosomes yog ob hom. Acrocentric chromosomes muaj nyob rau hauv tib neeg, thiab lub centromere muab tso rau ntawm qhov kawg ntawm chromosome deb ntawm qhov nruab nrab. Yog li, nws ua rau ib qho luv luv thiab ib caj npab ntev heev. Telocentric chromosomes tsis muaj nyob rau hauv tib neeg, thiab lub centromere muab tso rau hauv lub ntsis ntawm ib sab caj npab. Yog li ntawd, nws tsis muaj qhov txawv p thiab q caj npab. Qhov no yog qhov txawv ntawm acrocentric thiab telocentric chromosomes.
Download PDF ntawm Acrocentric vs Telocentric Chromosomes
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li daim ntawv ceeb toom. Thov rub tawm PDF version ntawm no: Qhov txawv ntawm Acrocentric thiab Telocentric Chromosomes
