Cov txheej txheem:
- Chromosomes uncoil ua dab tsi?
- nws hu li cas thaum chromosomes hloov mus ua chromatin?
- theem twg ua chromosomes Decondense rau hauv chromatin?
- YPob chromosomes uncoil hauv meiosis?
Video: Dab tsi yog chromosomes uncoil rau hauv chromatin?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Telophase. Thaum lub sij hawm telophase, cov chromosomes pib uncoil thiab tsim chromatin. Qhov no npaj cov khoom siv caj ces los tswj cov kev ua haujlwm metabolic ntawm cov hlwb tshiab.
Chromosomes uncoil ua dab tsi?
Tam sim no tias cov chromosomes tau sib cais, ob lub nuclei raug tsim. Cov spindle fibers ploj; cov chromosomes uncoil thiab dhau los ua spaghetti-zoo li chromatindua, thiab cov membrane nuclear rov tshwm sim. Cytokinesis yog qhov chaw cytoplasm faib ua ob lub hlwb thiab feem ntau tshwm sim ib txhij nrog telophase.
nws hu li cas thaum chromosomes hloov mus ua chromatin?
Chromatin condensation pib thaum prophase (2) thiab chromosomes pom. Chromosomes tseem condensed thoob plaws hauv ntau theem ntawm mitosis (2-5). … Txawm li cas los xij, thaum eukaryotic hlwb tsis sib faib - ib theem hu ua interphase - cov chromatin nyob rau hauv lawv cov chromosomes tsawg dua ntim.
theem twg ua chromosomes Decondense rau hauv chromatin?
Thaum telophase ob pawg chromatids yog ib puag ncig los ntawm cov ntaub so ntswg tshiab thiab chromosomes decondense rau hauv chromatin. Cytokinesis (kev faib cov cytoplasm rau hauv ob lub hlwb) ua raws li telophase.
YPob chromosomes uncoil hauv meiosis?
Meiosis pib nrog Meiosis I. Thawj theem hauv Meiosis kuv yog prophase I. Thaum lub sij hawm no, DNA condenses rau hauv chromosomes. … Ntawm no cov spindle fibers tau tawg, cov ntaub ntawv tshiab nuclear tsim, chromosomes uncoil, thiab cell faib ua ob tug ntxhais hlwb.
Pom zoo:
Nyob rau hauv anemia yog dab tsi yog qhov stimulus rau zus tau tej cov erythropoietin?
Tsis muaj O 2 (hypoxia) yog qhov kev txhawb nqa rau kev sib txuas ntawm erythropoietin (Epo), feem ntau hauv ob lub raum. Epo yog qhov muaj sia nyob, kev loj hlob thiab qhov sib txawv rau cov erythrocytic progenitors, tshwj xeeb tshaj yog cov colony-forming units-erythroid (CFU-Es) .
Moonblink nyob rau hauv dab tsi yog dab tsi?
Muaj ib yam mob hu ua nyctalopia, tseem hu ua lub hli ntsais, uas yog qhov tsis muaj peev xwm pom hauv qhov tsaus ntuj. Tab sis qhov ntawd tshwm sim vim qhov tsis muaj vitamin A . Vim li cas lub hli ntsais? Thaum qhov chaw txav mus, gases uas cuam tshuam lub hnub tuaj yeem khiav tawm ntawm lub hli sab hauvQhov no yuav piav qhia txog qhov tshwm sim luminous, qee qhov uas nyob ntev li teev.
Dab tsi yog qhov txawv ntawm chromatin chromatid thiab chromosome?
Dab tsi yog qhov txawv ntawm chromatin, chromatids, thiab chromosomes? Chromatin yog DNA thiab cov proteins uas tsim los ntawm chromosome. Chromosomes yog cov khoom sib cais ntawm DNA hauv ib lub cell. Thiab Chromatids yog zoo tib yamdaim DNA tuav ua ke los ntawm ib lub centromere .
Dab tsi condenses rau hauv chromosomes?
Lub sijhawm prophase, qhov nyuaj ntawm DNA thiab cov proteins uas muaj nyob hauv cov nucleus, hu ua chromatin, condenses. Cov chromatin coils thiab dhau los ua compact, ua rau tsim cov chromosomes pom. Chromosomes yog tsim los ntawm ib qho DNA uas muaj kev sib koom siab heev .
Nyob rau hauv nomothetic causal piav dab tsi yog qhov tsom rau qhov ua rau?
Nomothetic causal explanations focus on objectivity, prediction, and generalization. Cov txheej txheem rau kev sib raug zoo ntawm nomothetic causal yuav tsum muaj kev sib raug zoo plausible thiab nonspurious; thiab qhov ua rau yuav tsum ua ntej qhov tshwm sim hauv lub sijhawm .
