Delayed Fertilization and Chromosome Anomalies in the Hamster Embryo

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Science  05 May 1972:
Vol. 176, Issue 4034, pp. 518-521
DOI: 10.1126/science.176.4034.518


Polyploidy and aneuploidy in hamster embryos are produced as manifestations of pregnancy wastage in surviving young when the interval between the estimated time of ovulation and copulation and hence fertilization is progressively increased. Significant delays resulted in triploidy in runted embryos, and the sporadic occurrence of mosaic aneuploidies.