Three twinning types in mink (Mustela vison) embryogenesis

Three twinning types in mink (Mustela vison) embryogenesis The frequency of occurrence of monochorionic twins in the postimplantational embryogenesis of the American mink and their karyotypes were studied. Monochorionic twin pairs were found in which embryos had different chromosome sets: 2n, XX and 2n, XY or 2n and 3n. This fact contradicts the idea that monochorionic twins should be monozygotic and genetically identical but confirms our earlier hypothesis that a third twinning type exists in mink: monozygotic but genetically different. The mechanism of the emergence of this twinning type in mammals is discussed. It is suggested that the high (up to 4.5%) frequency of its emergence in the American mink is related to obligate embryonic diapause, causing abnormal fertilization. Russian Journal of Genetics Springer Journals

Three twinning types in mink (Mustela vison) embryogenesis

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Copyright © 2007 by Pleiades Publishing, Inc.
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
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