Cov txheej txheem:
- Koj pom chromocenter qhov twg?
- Chromocenter hauv nucleus yog dab tsi?
- Chromocenter hauv polytene chromosome yog dab tsi?
- Heterochromatin thiab euchromatin yog dab tsi?
Video: Pom chromocenter nyob qhov twg?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Ib lub hauv paus amorphous loj pom nyob rau hauv lub nuclei ntawm larval salivary gland cells ntawm Drosophila.
Koj pom chromocenter qhov twg?
Nrog ntau cov kab mob centromeres, pericentromeric heterochromatin thiab qee zaum txawm tias telomeres pawg los tsim ib lub npe nuclear lossis aggregate hu ua chromocenter (24). Cov aggregates no feem ntau pom ntawm lub nuclear periphery lossis ib ncig ntawm nucleolus.
Chromocenter hauv nucleus yog dab tsi?
: a densely staining aggregation of heterochromatic regions in the nucleus ntawm qee lub hlwb.
Chromocenter hauv polytene chromosome yog dab tsi?
polytene chromosome chromocentre. Lus Txhais: Ib cheeb tsam uas thaj tsam centric ntawm polytene chromosomes koom ua ke.
Heterochromatin thiab euchromatin yog dab tsi?
Heterochromatin yog txhais tau tias yog thaj tsam ntawm chromosome uas yog tsaus nti nrog DNA tshwj xeeb stainthiab yog nyob rau hauv daim ntawv sib piv condensed. Euchromatin txhais tau tias yog thaj tsam ntawm cov chromosome uas yog nplua nuj nyob rau hauv gene concentration thiab nquag koom rau hauv cov txheej txheem transcription.
Pom zoo:
Ntawm qhov chaw twg tsis pom los ntawm qhov pom sab hauv?
Lub qhov ntswg zoo tshaj plawsyog nyob tom qab thiab yog li tsis pom nyob rau sab xub ntiag. Cov duab 9.1, 9.3, 9.5, 9.7, thiab 9.10 N/A Pab txhawb rau anterior cranial fossa; tsim ib feem ntawm qhov ntswg septum thiab qhov ntswg kab noj hniav;
Nyob rau qhov chaw nyob ze rau qhov pom?
Kev nyob ze ze Lub zeem muag Qhov kev pab cuam reflex (lossis nyob ze teb) yog peb feem reflexuas coj cov khoom ze rau hauv kev tsom los ntawm lens thickening, pupillary constriction, thiab sab hauv kev sib hloov ntawm qhov muag-qhov muag convergence.
Qhov qhov muag tsis pom ntawm lub tsheb thauj khoom nyob qhov twg?
Tsev tsheb ciav hlau qhov muag tsis pom muaj xws li: Ncaj nraim rau pem hauv ntej ntawm lub tsheb thauj khoom mus txog 20 ko taw Ncaj nraim hauv qab lub tsheb thauj khoom li 30 ko taw Txhua sab ntawm lub tsheb thauj mus rau sab nraub qaum Tam sim ntawd hauv qab thiab qab tus neeg tsav tsheb qhov rais Puas muaj qhov muag tsis pom kev tsheb thauj mus los?
Qhov kev pom twg pom kev tsis sib haum xeeb yog qhov tsim nyog?
Thaum tib neeg kev sib raug zoo pom tau txais kev sib haum xeeb ntawm lub koom haum ua ib feem tseem ceeb, kev sib cuam tshuam kev pom ntawm-kev tsis sib haum xeeb ntawm lub koom haum yuav siv tib lub tswv yim ib kauj ruam ntxiv. Nws qhia tias qhov kev tsis sib haum xeeb tsis tu ncua, tsawg kawg yog qhov tsim nyog thiab muaj txiaj ntsig zoo rau ib pab pawg .
Dab tsi yog qhov txawv ntawm kev pom tsis pom thiab pom tsis pom ntau dua?
Kev muaj peev xwm tawm tsam yam tsis muaj qhov kawg ntawm kev sau ntawv vs kev tuaj yeem cuam tshuam rau lwm tus neeg kuj yog qhov sib txawv. Qhov tseem ceeb Invisibility yog "qhov tseeb nrhiav / nkaum / mus ncig tsis pom" qhov twg Qhov Kev Pom Zoo Tshaj Plaws yog ntau ntawm kev sib ntaus sib tua Puas pom qhov tsis pom kev ua haujlwm ntawm kev pom tsis pom ntau dua?
