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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Analýza aneuploidií a studium meiózy u oocytů metodou komparativní genomové hybridizace na DNA čipu
 Kocur, Tomáš
Aneuploidy frequency increases with advanced female age and results in infertility or live birth of affected individuals. Aneuploidies occur mainly during female meiosis. Polar bodies biosied from oocytes after first and second meiosis were analyzed using array comparative genomic hybridization testing for all chromosomes. More than a half of tested oocytes were aneuploid. Aneuploidies as a result of nondisjunction in meio-sis II were slightly more frequent than meiosis I errors. Premature chromatide predivisi-on was absolutely predominant among errors occurring during meiosis I. Despite the fact that aneuploidies were detected for each chromosome, most aneuploidies were detected for small acrocentric chromosomes. Possible mechanisms of aneuploidy formation are discussed in context of information obtained by the means of animal biotechnologies at different species of mammals.
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