2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Alleles cais ntawm ib leeg thaum anaphase ntawm meiosis I, thaum homologous khub ntawm chromosomes sib cais.
theem ntawm meiosis Puas muaj kev sib cais ntawm alleles tshwm sim?
Chromosome segregation tshwm sim ntawm ob theem sib cais thaum lub sij hawm meiosis hu ua anaphase I thiab anaphase II (saib daim duab meiosis).
Puas alleles cais hauv meiosis 1 lossis 2?
Raws li cov chromosomes cais ua cov gametes sib txawv thaum lub sij hawm meiosis, ob qhov sib txawv ntawm cov noob caj noob ces kuj caiskom txhua gamete tau txais ib qho ntawm ob qho alleles.
Lub sijhawm twg txheej txheem Puas muaj kev sib cais ntawm alleles tshwm sim?
Thaum tus txheej txheem meiosis, thaum gametes raug tsim, cov khub allele cais, piv txwv li lawv sib cais. Rau kev txiav txim siab ntawm Mendelian qhov zoo, ob qho alleles koom nrog - ib qho yog recessive thiab lwm tus yog dominant.
Puas alleles cais thaum meiosis?
Tus alleles ntawm ib tug noob sib cais los ntawm ib leegthaum kev sib deev hlwb raug tsim thaum lub sij hawm meiosis. … Txij li thaum alleles ntawm cov noob muaj nyob rau hauv cov chaw sib thooj ntawm homologous khub ntawm chromosomes, lawv kuj sib cais thaum lub sij hawm meiosis.
Pom zoo:
Lub sijhawm kuv lub sijhawm dawb lossis thaum kuv lub sijhawm dawb?
yog li, qhov no txhais tau tias "thaum kuv lub sijhawm dawb" tsis siv ntauthiab koj muab "hauv kuv lub sijhawm dawb" ntau dua nyob rau qhov kawg ntawm kab lus. Piv txwv li: Kuv tau taug kev tus dev thaum kuv lub sijhawm dawb.
Nyob rau theem twg ntawm meiosis chiasmata pom?
Lub chiasmata tau pom thaum the diplotene theem ntawm prophase Intawm meiosis, tab sis qhov tseeb "hloov-overs" ntawm cov khoom siv caj ces tau xav tias yuav tshwm sim thaum lub sijhawm pachytene dhau los. Chiasmata nyob qhov twg?
Lub sijhawm nyob qhov twg ntawm lub sijhawm teem sijhawm?
kab kab rov tav ntawm lub rooj ntu ntu yog hu ua ntu ntu. Lub sijhawm nyob rau ntawm lub sijhawm nyob qhov twg? Ib lub sijhawm yog kab kab rov tav ntawm lub rooj ntu ntu. Muaj xya lub sij hawm nyob rau hauv lub sij hawm ntawm lub sij hawm, nrog txhua tus pib ntawm sab laug.
Kev cais tawm ntawm alleles tshwm sim nyob qhov twg?
Chromosome cais yog cov txheej txheem hauv eukaryotes los ntawm ob tus viv ncaus chromatids tsim los ntawm DNA replication, los yog ua ke homologous chromosomes, sib cais los ntawm ib leeg thiab tsiv mus rau opposite ncej ntawm lub nucleus. Txoj kev sib cais no tshwm sim thaum mitosis thiab meiosis.
Ntawm lub sijhawm lub sijhawm lub atomic loj?
Lub atomic mass ntawm ib lub caij yog qhov nruab nrab loj ntawm cov atoms ntawm ib lub ntsiab ntsuas hauv atomic mass unit(amu, tseem hu ua d altons, D). Lub atomic huab hwm coj yog qhov hnyav nruab nrab ntawm tag nrho cov isotopes ntawm lub caij ntawd, nyob rau hauv uas qhov loj ntawm txhua isotope yog sib npaug los ntawm kev nplua nuj ntawm cov isotope.
