All diploid species are hermaphroditic and either self-fertile or self-sterile. 所有的两倍体种都是两性的,而且不是白花能稔,就是自花不稔。
( genetics) an organism having a diploid set of chromosomes from each parent. (遗传学)从双亲各得到两套染色体的有机体。
The diploid genomes of complex organisms limit genetic approaches in biomedical model species such as mice. 生物体中的双倍体基因组限制了在小鼠等生物医学模型动物中进行的基因研究。
The research results showed that there were no big difference in the time of beginning fertilization between autotetraploid and diploid rice. 研究结果表明,同源四倍体水稻和二倍体水稻在发生受精作用的时间上不存在很大的差异。
These cells had retained a diploid Karyotype. 这些细胞持有二倍体核型。
Chromosome Doubling and Crossing of Wild Diploid Dactylis glomerata 野生二倍体鸭茅染色体加倍及杂交利用研究
The diploid condition is restored when the nuclei of two gametes fuse to give the zygote. 当两个配子核融合形成合子时,又恢复二倍体状态。
Taking the diploid and tetraploid cultivars of fodder beet as experimental materials, the relationship between chromosome ploidy and leaf stomatal characters was studied. 以饲用甜菜二倍体和四倍体为试验材料,研究了气孔的长、宽度及气孔保卫细胞叶绿体数目与倍性的关系。
The zygote undergoes repeated mitosis and differentiation to become the diploid organism again. 合子经过反复的有丝分裂和分化重新成为一个二倍体的生物体。
Ovule Culture of Interspecific Hybrids from Diploid Wild Cotton X Tetraploid Cultivars and the Embryo and Seedling Development 棉属二倍体野生棉与四倍体栽培棉种间杂交的胚珠培养
CDNA-AFLP analysis among different organs of haploid and diploid plants in twin-seedling rice 标题双胚苗水稻中单倍体和二倍体不同器官的cDNA-AFLP分析
Conclusion SOFC could induce human embryo lung diploid cell malignant transformation. 结论胡麻油烟冷凝物具有诱导人胚肺二倍体细胞转化的作用。
The chromosomes of Y cells were diploid at the early passages, but became aneuploid in the late passages. 晚代细胞染色体主要为异倍体,而早代细胞主要为二倍体。
The fungus is unicellular and exists in both haploid and diploid phases. 它是单细胞真菌,有单倍体和二倍体两种存在形态。
Autotetroploid rice has double genome compared with diploid rice. 同源四倍体水稻是二倍体水稻染色体加倍形成的。
There are obvious difference on morphology and cytology between polypoid and diploid. 四倍体与二倍体在形态学和细胞学上有明显差异。
This works for diploid plants, but numerous plant species are polyploid and must therefore have multiple sex chromosomes. 这对二倍体植物起作用,但多数植物是多倍体,它们必定有多条性染色体。
The pollen grain germinates on a special extension of the carpel, the stigma, and double fertilization results in a diploid zygote and triploid ( usually) endosperm nucleus. 花粉粒在柱头上萌发,双受精导致双倍体的合子和三倍体的胚乳形成。
In diploid cells, there is a pair of sex chromosomes; the remainder are termed autosomes. 在二倍体细胞中,有一对性染色体,其余的都是常染色体。
Comparative Studies on the Morphological Characteristics of Diploid and Tetraploid of Wild Sickle Alfalfa 二倍体和四倍体野生黄花苜蓿形态特征比较研究
Finally, in the sporic life cycle, the living organism alternates between haploid and diploid states. 最后,在孢子生命周期,生活的生物体有单倍体和二倍体两个阶段的交替。
Two diploid gametes may fuse to give a tetraploid zygote, or gamete may develop directly by parthenogenesis. 两个二倍体配子融合可能产生一个四倍体合子,这样的配子也可以通过孤雌生殖直接发育而来。
There are8 cases diploid and38 cases aneuploid in bladder carcinoma patients. 而膀胱癌患者二倍体肿瘤8例,异倍体肿瘤38例;
In diatoms the vegetative cells are diploid, and are formed directly by the fusion of gametes. 硅藻类的营养细胞是二倍体,它是由配子融合直接产生的。
Having a diploid set of chromosomes derived from each parent. 双二倍体的具有从父母双亲获得的两套染色体的。
SDS-PAGE showed that the major structural proteins of diploid and triploid parasites had similar molecular weight values. SDS-PAGE结果表明,两型虫株的结构蛋白质均具有基本相同的分子量。
The differences of expression at different environments for triploid endosperm nuclear genes, cytoplasmic genes and diploid maternal plant nuclear genes were found for the performance of TR. 控制稻米透明度性状表现的三倍体胚乳核基因、细胞质基因和二倍体母体植株核基因效应在不同环境下存在着表达水平上的差异。
A gamete containing a diploid number of chromosomes, rather than the usual haploid number. 2一个包含二倍体数目染色体而不是通常单倍体数目染色体的配子。