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The Mechanism of Centriole Inactivation in Starfish Oocytes
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The centrosome is the major organizing center in a cell, composed by two
centrioles, one mother and one daughter, and surrounded by a pericentriolar
material, which nucleates microtubules. Centriole duplication and segregation is
tightly coupled to cell cycle, which guarantees that centriole number is maintained
over generations. During the somatic cell cycle, a pair of centrioles duplicates,
after which each daughter cell receives a pair, forming a closed cycle. However,
during fertilization, if both cells were to contribute with their pair of centrioles,
gamete fusion would result in the double of the normal centriole number.(...)
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Biology Cell Biology