| 词汇 | example_english_meiotic-division |
| 释义 | meiotic divisioncollocation in Englishmeanings of meioticand divisionThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with division. meiotic adjective uk /maɪˈɒt.ɪk/ us /maɪˈɑː.t̬ɪk/ relating to the act or process of meiosis (= a type of ... See more at meiotic division noun uk /dɪˈvɪʒ.ən/ us /dɪˈvɪʒ.ən/ the act of separating something into parts or groups, or the way that it ... See more at division Examples of meiotic divisionThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Maturation is complete when the second meioticdivision is arrested at metaphase where the egg will await fertilisation. In conclusion, somatic cell nuclei are unable to go through meioticdivision when introduced into oocyte meiotic cytoplasm, partly due to the abnormal kinetochore distribution. These cells were able to complete their second meioticdivision within the oocyte cytoplasm. During this period the chromatin of the oocyte completes the second meioticdivision and forms the female pronucleus. Most of the injected oocytes were at telophase of the second meioticdivision. In all eutherian and marsupial species so far examined, the oocyte is ovulated after completing the first meioticdivision at the first polar body stage. All oocytes in this group were arrested at the metaphase of the second meioticdivision after completing meiotic maturation. As a consequence the oocyte's ability to complete meioticdivision could be impaired, as was the case in the experiment described here. Antioxidant therapy counteracts the disturbing effects of diamide and maternal ageing on meioticdivision and chromosomal segregation in mouse oocytes. Activation of the heterokaryon triggers the first meioticdivision. This is partially due to reported differences among mammalian species in some mechanisms regulating oocyte meioticdivision. The second meioticdivision is completed after fertilisation; cohesion between the constituent chromatids of each chromosome ceases and each migrates to an opposite spindle pole. The model mimicked a germ line undergoing mitosis and recombination occurring during the first meioticdivision. The pattern of attachment in the first meioticdivision is different from attachment in somatic mitosis. Around 11-12 weeks of gestation, the germ cells situated innermost in the cortex, enter prophase of the first meioticdivision. The formation of normal meiotic apparatus is critical to the progression of meioticdivision. However, its role in meioticdivision is still poorly documented, especially in the activation of mammalian oocytes. Human oocytes are released from the ovary at metaphase of the second meioticdivision, making direct karyotype analysis at that stage possible but technically difficult. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Want to learn more? Go to the definition of meiotic Go to the definition of division See other collocations with division |
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