极核 meaning in English
polar nuclei
polar nucleus
pole nucleus
Examples
- The polar and egg nuclei of the female gametophyte are genetically identical .
雌配子体中的极核和卵核遗传上是同一的。 - Aim to seek the core center of regional economical development in methodology
摘要目的研究并确定山西省各地区在经济发展上的理论“极核” 。 - In flowering plants the endosperm tissue is usually triploid , resulting from the fusion of one of the pollen nuclei with the two polar nuclei
在开花植物中，胚乳组织多为三倍体，由一个花粉核和两个极核融合产生。 - Antipodal cells the three haploid cells found in the embryo sac of seed - bearing plants that migrate to the chalaxal end of the sac farthest from the micropyle
反足细胞：胚囊三次分裂形成卵细胞，助细胞和极核等，其中位于合点端的三个单倍体细胞称反足细胞。 - When a pollen grain germinates , a pollen tube pushes its way out through an aperture in the pollen grain wall , and the nuclei migrate into the tube
生殖细胞核分裂，形成两个仅由细胞核和细胞质构成的精子，其中一个将与卵受精，另一个则与极核融合形成胚乳核。