I期停滞未成熟卵体外成熟培养目的:观察体外受精-胚胎移植周期中全部卵细胞MetaphaseI期停滞的形态学特征与体外成熟培养促熟率。方法:2例体外受精-胚胎移植周期患者,获得卵细胞均处于MetaphaseI期,行体外成熟培养,同期评价其形态学特征。结果:MetaphaseI期停滞卵细胞的胞质质地均一,透明带致密透亮,无卵周隙。卵周颗粒...
Learn about metaphase I and discover what are the stages of meiosis. You will understand all stages of meiosis with emphasis on the cellular...
网络第一中期 网络释义 1. 第一中期 二、第一中期(MetaphaseI):此时核膜消失,纺缍丝出现,n个二价体并排在赤道板上,著丝点(Centromere)定位在纺缍 … tw.knowledge.yahoo.com|基于3个网页
Xenopus oocytes arrested in prophase I resume meiotic division in response to progesterone and arrest at metaphase II. Entry into meiosis I depends on the activation of Cdc2 kinase [M-phase promoting factor (MPF)]. To better understand the role of Cdc2, MPF activity was specifically inhibited by...
Visualization of the metaphase II meiotic spindle in living human oocytes using the Polscope enables the prediction of embryonic developmental competence a... Meiotic spindles in living human oocytes can be visualized by the Polscope. This study investigated the relationship between the presence/...
Answer to: What are the stages of Metaphase I? By signing up, you'll get thousands of step-by-step solutions to your homework questions. You can...
From the frequency of being bound at metaphase I and the frequency of recombinant chromosomes at anaphase I or metaphase II in the arms considered, estimates of chiasma frequencies were derived. The materials employed in those instances were an open pollinated variety of rye (Orellana and Girald...
·metaphase II (M II ) ·metaphase inhibitor (Dustin 1947) ·metaphase pariring index (Tobgy 1943) ·metaphase plate ·metaphase spindle ·metaphasia; metaplasy ·metaphasis ·metaphloem 热门分类 ·常用8000词汇 ·分子生物学词汇 ·遗传学词汇 ·内科学词汇 ·药理学词汇 成为...
in metaphase I spindle fibre attaches to homologus chromosome white in metaphase II attaches to chromatids. Chromosome completely decondenese in telophase I. Blvalent is fromed at leptotene stage level become clearly visible in zygotene stage Diakinesis represents transition to metaphase I. AT-...
Fernández-Calvín B, Orellana J (1993) Metaphase I bound-arm frequency and genome analysis in wheat- Aegilops hybrids. 2. Cytogenetical evidence for excluding Ae. sharonensis as the donor of the B genome of polyploid wheats. Theor Appl Genet 85:587–592...