{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T23:10:26Z","timestamp":1777763426261,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2008,5,8]],"date-time":"2008-05-08T00:00:00Z","timestamp":1210204800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2008,5,8]],"date-time":"2008-05-08T00:00:00Z","timestamp":1210204800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cytogenet Cell Genet"],"abstract":"<jats:p>XY\/XYY sex-chromosome mosaicism was demonstrated in both bone marrow and germ cells of a wild adult common shrew. Secondary sexual characteristics were those of a normal male, but the testes were small, and the sperm count was only about 3% of normal. Most of the seminiferous tubule cross-sections examined revealed serious spermatogenic impairment and a reduced diameter. A range of sex-chromosome pairing configurations was observed in XYY primary spermatocytes, including configurations involving the X and both Y chromosomes in a linear or radial array. The presence of metaphase II (MII) spreads with an XY sex-chromosome complement indicated that XYY primary spermatocytes could contribute products to MII. Following Burgoyne (1979) and Burgoyne and Biddle (1980), a number of models of spermatocyte loss were tested. The data indicated that there was an association between the sex-chromosome complement of primary spermatocytes and their contribution to MII The best fit to the observed MII frequency data was provided by a model which assumed that all XYY primary spermatocytes with a univalent Y chromosome and a high proportion of XYY primary spermatocytes with an unpaired X chromosome failed to contribute products to MII.<\/jats:p>","DOI":"10.1159\/000132234","type":"journal-article","created":{"date-parts":[[2008,5,9]],"date-time":"2008-05-09T06:38:51Z","timestamp":1210315131000},"page":"225-233","source":"Crossref","is-referenced-by-count":7,"title":["The XYY condition in a wild mammal: an XY\/XYY mosaic common shrew (Sorex araneus)"],"prefix":"10.1159","author":[{"given":"J.B.","family":"Searle","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.J.","family":"Wilkinson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2008,5,8]]},"container-title":["Cytogenetics and Cell Genetics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/132234","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000132234","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T14:48:39Z","timestamp":1777474119000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000132234"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,5,8]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000132234","archive":["Portico"],"relation":{},"ISSN":["0301-0171","1421-9816"],"issn-type":[{"value":"0301-0171","type":"print"},{"value":"1421-9816","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,5,8]]}}}