Dev Growth Differ 1990 Feb 01;321:41-49. doi: 10.1111/j.1440-169X.1990.00041.x.

Ultrastructural Studies on the Behavior of Centrioles during Meiosis of Starfish Oocytes: (oocyte/meiosis/centriole/starfish).

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The behavior of centrioles and ultrastructural changes of the nucleus were observed in maturing oocytes of the starfishes, Asterina pectinifera and Asterias amurensis. Observations were focused on the number and behavior of centrioles during two successive meiotic divisions. Examination of serial sections revealed that in meiosis I each division pole has a pair of centrioles, whereas in meiosis II each has only one centriole, confirming the observations by Sluder et al. (1989) on oocytes of Pisaster ocraceus and Asterias forbesi. The first polar body had two centrioles and the second polar body had only one. These results indicate that no duplication of centrioles occurs during the two successive meiotic divisions, and that the egg inherits one centriole from a primary oocyte.

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