reproductive system
• 20-30% of mutant oocytes extrude abnormally large polar bodies; half are >30 mm in diameter, while the remaining half undergo mitotic-like cleavage to produce cells of equal size
• in 90% of mutant oocytes, the first polar body persists for more than 11 hrs while in wild-type it degrades by 7 hours
• first polar bodies also elongate and frequently undergo an additional division instead of undergoing rapid degeneration
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• the first meiotic division of mutant oocytes frequently resembles mitotic cleavage or produces an abnormally large polar body
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• mutant oocytes fail to arrest at metaphase II and instead undergo parthenogenetic activation
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• the metaphase spindle does not properly translocate to the cell surface in mutant oocytes
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• mutant females exhibit reduced fertility
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cellular
• 20-30% of mutant oocytes extrude abnormally large polar bodies; half are >30 mm in diameter, while the remaining half undergo mitotic-like cleavage to produce cells of equal size
• in 90% of mutant oocytes, the first polar body persists for more than 11 hrs while in wild-type it degrades by 7 hours
• first polar bodies also elongate and frequently undergo an additional division instead of undergoing rapid degeneration
|
• the first meiotic division of mutant oocytes frequently resembles mitotic cleavage or produces an abnormally large polar body
|
• mutant oocytes fail to arrest at metaphase II and instead undergo parthenogenetic activation
|
• the metaphase spindle does not properly translocate to the cell surface in mutant oocytes
|