2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nyob rau hauv meiosis, muaj ob qhov kev faib tawm nuclear uas ua rau plaub lub nuclei thiab feem ntau yog plaub tus ntxhais, txhua tus muaj ib nrab ntawm cov chromosomes raws li niam txiv cell. Thawj cais homologs, thiab qhov thib ob zoo li mitosis- cais chromatids rau hauv ib tus neeg chromosomes.
Dab tsi sib cais hauv thawj qhov kev faib meiosis?
Tus txheej txheem ntawm meiosis muaj ob lub cellular division: Thawj meiotic division cais pairs ntawm homologous chromosomes kom halve tus chromosome tooj (diploid → haploid) Tus thib ob meiotic division cais tus muam chromatids (tsim los ntawm replication ntawm DNA thaum interphase)
Dab tsi sib cais thaum txhua qhov kev faib meiosis?
Homologue khub cais thaum thawj puag ncig ntawm cell faib, hu ua meiosis I. Muam chromatids cais thaum lub sij hawm thib ob, hu ua meiosis II. Txij li thaum kev faib cell tshwm sim ob zaug thaum lub sij hawm meiosis, ib lub cell pib tsim tau plaub gametes (qe lossis phev).
Dab tsi yog sib cais thaum lub sij hawm faib thib ob ntawm meiosis?
Meiosis II zoo ib yam li mitosis hauv txhua tus chromosome muaj ob tus muam chromatids txuas ntawm lub centromere. Lub hom phiaj ntawm meiosis II yog cais tus muam chromatids.
Dab tsi cais meiosis thiab mitosis?
Mitosis cuam tshuam nrog kev faib cov hlwb hauv lub cev, thaum meiosis koom nrog faib cov hlwb sib deev. … Ob tug ntxhais hlwb raug tsim tom qab mitosisthiab cytoplasmic division, thaum plaub tus ntxhais hlwb raug tsim tom qab meiosis. Cov ntxhais hlwb uas tshwm sim los ntawm mitosis yog diploid, thaum cov uas tshwm sim los ntawm meiosis yog haploid.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Dab tsi tshwj xeeb cais thaum lub sij hawm meiosis kuv?
Homologue khub sib cais thaum thawj puag ncig ntawm cell faib, hu ua meiosis I. Muam chromatids cais thaum lub sij hawm thib ob, hu ua meiosis II. Txij li thaum kev faib cell tshwm sim ob zaug thaum lub sij hawm meiosis, ib lub cell pib tsim tau plaub gametes (qe lossis phev).
Puas yog disneyland cais thaum nws qhib thawj zaug?
Teb luv luv: Tsis yog. Disneyland yeej tsis raug cais tawm, thiab txais tos txhua tus qhua tsis hais haiv neeg twg. Txawm li cas los xij, rau cov neeg ua haujlwm, nws yog kev sib deev thiab kev ntxub ntxaug. Yog tsis xav qhib lub kaus poom ntawm cov kab cab hais txog Nazi thiab cov neeg Yudais kerfunkle, W alt Disney nws tus kheej tsis muaj kev ntxub ntxaug.
Thaum dab dab sau thawj zaug luam tawm?
Ghostwritten yog thawj zaug luam tawm los ntawm tus sau Askiv David Mitchell. Tshaj tawm xyoo 1999, nws yeej John Llewellyn Rhys nqi zog thiab tau txais txiaj ntsig zoo. Zaj dab neeg no tshwm sim nyob rau sab hnub tuaj Asia, tab sis kuj txav mus los ntawm Russia, Britain, Asmeskas thiab Ireland.
Thaum qhov kev ntsuam xyuas thawj zaug dab tsi yog qhov cim ntawm kev poob siab?
Cov tsos mob ntawm kev poob siab tuaj yeem suav nrog: tsis muaj zog, mem tes nrawm . txias, clammy tawv nqaij . faintness/dizziness. Yuav ua li cas yog lub cim ntawm kev poob siab? Nyob ntawm qhov ua rau, cov tsos mob thiab cov tsos mob ntawm kev poob siab yuav suav nrog:
