查询词典 meiosis

Linkage groups can be broken up by CROSSING OVER at meiosis to give new combinations of genes.

连锁群在减数分裂中通过联会交换被打破而产生基因重组。

Megaspore mother cells undergo meiosis, which results in the formation of 4 megaspores in a row. The chalazal-most cell develops into an 8-nuclei embryo sac after 3 rounds of mitosis. A mature embryo sac is produced after cellularization and nuclear migration.

结果表明：1大孢子母细胞经过减数分裂形成直线排列的4个大孢子，其中珠孔端的3个大孢子退化，合点端的大孢子进行3次有丝分裂，形成八核胚囊， 8个核迅速细胞化，最终发育为成熟胚囊。

The meiosis of oocytes differ from mitoses of general cells. Especially in most mammalian species, oocytes are formed during fetal life, but they are arrested at the prophase stage of the first meiotic division until around the time of ovulation.

卵母细胞的成熟分裂有别于一般细胞的有丝分裂，尤其是哺乳动物，在胎儿期或出生后不久，初级卵母细胞就陆续进入第一次成熟分裂前期阶段，但长时间的&休止&于此期，直到性成熟时在促性腺激素等因素的作用下，第一次成熟分裂才重新启动。

Results showed that the pollen abortion of female flowers occurred at the meiosis stage of microspore caused by the unnormal tetrads with uncomplete formation of cell plate.

该文以美国肥皂荚雌雄株上不同发育时期花蕾或花为试材，从实体解剖和组织细胞学角度对其性别分化过程进行了比较系统的研究。

The behavior of chromosomes at meiosis of PMC of 9 combination and selfed seed set of 16 combination of Triticum-Aegilopsamphidiploids were studied.

对小麦-山羊双二倍体9个组合的细胞遗传学和16个组合的自交结实率进行了观察。

The topics in this lab course include the following areas: Microscope and cell morphology, Cell Physiology, Enzymes, Mitosis and meiosis, Cellular respiration, Photosynthesis, Mendelian genetics, Prokaryotes, Protists, Fungi and lower Plants.

本学期课程包含显微镜介绍、各种动、植物细胞形态及构造、细胞生理现象、酵素反应、细胞有丝及减数分裂、遗传性状、细胞呼吸作用、光合作用、原核生物形态、原生生物形态、真菌形态及苔藓植物形态。

The purpose of this laboratory is to train undergraduate students with practical genetics, including the basic principles of genetics, inheritance of pea traits, root tip chromosomes, Drosophila salivary polytene chromosomes, meiosis, statistical methods, bacterial antibiotic resistance, plasmid isolation, restriction, and gel electrophoresis, blood type, and human genetics.

遗传学实习 1 必陈福旗，戴国兴本课程之目的，在使学生透过实际操作与试验，了解遗传学之原理，实验内容包括：碗豆七个性状遗传，植物根尖染色体观察，果蝇唾腺染色体，减数分裂，统计方法，细菌抗药性，质体之抽取及限制酵素切割及电泳分离，血型，人类遗传。

The failure of homologous chromosomes to pair during meiosis.

在中期Ⅰ8对染色体的分布是无秩序的。

In meiosis I, homologous chromosomes pair up and line up in pairs at the centre of the cell.

在第一次减数分裂时，同源染色体成双地在细胞中间排列。

The separation of homologous chromosomes during meiosis.

用数的符号及数的值来表示数的一种方法。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷