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Recent studies of trisomy 21 have shown that altered levels of recombination are associated with maternal non-disjunction occurring at both meiosis I (MI) and meiosis II (MII). To comprehend better the association of recombination with nondisjunction, an understanding of the pattern of meiotic exchange, i.e. the exchange of genetic material at the(More)
Acknowledgments We are grateful to numerous people for commenting on early drafts of this report and for helpful and sometimes challenging discussions. Some of those people are L. We especially thank Bonnie F. Liebman, CSPI's director of nutrition, for her careful review and thoughtful comments. However, it is only the authors who are responsible for the(More)
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