2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Thaum lub sijhawm prophase I, cov chromosomes condense thiab pom hauv lub nucleus. Vim tias txhua tus chromosome tau muab luam tawm thaum lub sijhawm the S theem uas tau tshwm sim ua ntej prophase I, txhua tus tam sim no muaj ob tus muam chromatids koom nrog ntawm centromere. Qhov kev npaj no txhais tau tias txhua tus chromosome muaj cov duab ntawm X.
theem twg ntawm meiosis ua chromosomes duplicate?
Nyob rau hauv meiosis, chromosomes los yog chromosomes duplicate (thaum interphase) thiab homologous chromosomes pauv cov ntaub ntawv genetic (chromosomal crossover) thaum thawj faib, hu ua meiosis I. Ib zaug ntxiv hauv meiosis II, faib cov viv ncaus chromatids los ua haploid gametes.
Yuav ua li cas yog chromosome duplication tshwm sim?
Nyob rau hauv lub voj voog ntawm eukaryotic cell, chromosome duplication tshwm sim thaum "S theem" (theem ntawm DNA synthesis) thiab chromosome segregation tshwm sim thaum "M theem" (theem mitosis).
Puas chromosome duplication tshwm sim hauv meiosis?
Meiosis yog cov txheej xwm uas npaj thiab cais cov chromosomes thiab chromatids mus rau hauv cov menyuam ntxhais. Thaum lub sij hawm interphases ntawm meiosis, txhua chromosome yog duplicated.
Yuav ua li cas thaum chromosome duplication?
Lub txheej txheem ntawm kev tsim ob lub hlwb tshiab pib ib zaug ib lub xovtooj tau duplicate nws cov chromosomes. Hauv lub xeev noTxhua chromosome muaj ib tug sib koom ua ke ntawm tib yam replicas hu ua chromatids. Cov chromosomes condense thiab kab nyob rau hauv nruab nrab ntawm lub nucleus. Lub daim nyias nyias nyob ib puag ncig cov nucleus tawg thiab ploj mus.
Pom zoo:
Dab tsi ntawm cov hauv qab no yog qhov tshwm sim ntawm kev sib ntaus sib tua ntawm lub pas dej brandywine?
Cov txiaj ntsig ntawm Kev Sib Tw ntawm Brandywine Creek yog dab tsi? Washington tsuas yog sim ncua kev ntes Philadelphia kom nws ua tiav li no. Cov tub rog Asmeskas tsis tau poob siab ntau thiab lawv tau khiav tawm ntawm British. Washington tseem tuaj yeem kawm los ntawm nws qhov yuam kev ntawm kev tso nws txoj cai sab xis qhib.
Thaum twg qhov kev rov tshwm sim tshwm sim?
Thaum Replevin tuaj yeem thov Li no, qhov no yog qhov xwm txheej tshwm sim ntau tshaj plaws uas yuav tshwm sim thaum tus neeg siv khoom tsis raug them nyiaj qiv tsheb. Kev ua txhaum cai ntawm kev thaj yeeb nyab xeeb yog me ntsis luv luv. Nws tsis suav nrog kev txeeb tsheb yam tsis tau ceeb toom lossis kub xov tooj kom tsav tsheb mus.
Lub sijhawm sib txawv ntawm kev cuam tshuam tuaj yeem tshwm sim ntawm?
Kev cuam tshuam tshwm sim tshwm sim thaum theem sib txawv ntawm cov nthwv dej yog ntau yam ntawm 2π, qhov kev cuam tshuam cuam tshuam tshwm sim thaum qhov sib txawv yog π, 3π, 5π, thiab lwm yam. kev cuam tshuam tsim nyog tshwm sim nyob qhov twg?
Qhov kev tshwm sim hauv lub neej tseem ceeb ntawm kev ntsuas kev ntsuas kev sib raug zoo twg muaj tus lej ntau tshaj?
Qhov kev tshwm sim ntawm qib siab tshaj yog tuag ntawm tus txij nkawm(nrog tus nqi nruab nrab ntawm 100), txheeb ze rau kev sib yuav, nrog tus nqi nruab nrab ntawm 50, thiab, piv txwv, kev tuag ntawm tus phooj ywg ze, uas tau qhab nia 37. Qhov xwm txheej tseem ceeb ntawm lub neej ntawm Kev Hloov Kho Kev Ntsuas Kev Ntsuas Qhov Ntsuas puas muaj cov lej hloov pauv lub neej ntau tshaj?
Qhov kev tshwm sim twg txhawb nqa ntawm kev ncaj ncees ntawm lub sijhawm?
Kev siv nyiaj sib npaug txhawb nqa kev ncaj ncees rau lub sijhawm vim nws yog kev sim ua kom cov pej xeem tiam tam sim no tsis hloov lub nra ntawm kev them nyiaj rau cov kev pabcuam xyoo tam sim no rau Cov neeg them se yav tom ntej (GASB GASB Lub Tsev Haujlwm Saib Xyuas Kev Lag Luam Tus Qauv Txheej Txheem (GASB Cov Lus Qhia luv luv) yog muab los ntawm GASB rau set feem ntau lees paub cov cai tswjfwm (GAAP) rau lub xeev thiab tsoomfwv hauv nroog hauv Teb Chaws Asmeskas Cov nqe
