{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,27]],"date-time":"2025-09-27T07:51:34Z","timestamp":1758959494376,"version":"3.41.0"},"reference-count":40,"publisher":"Canadian Science Publishing","issue":"7","license":[{"start":{"date-parts":[[2016,7,1]],"date-time":"2016-07-01T00:00:00Z","timestamp":1467331200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.nrcresearchpress.com\/page\/about\/CorporateTextAndDataMining"}],"content-domain":{"domain":["cdnsciencepub.com"],"crossmark-restriction":false},"short-container-title":["Genome"],"published-print":{"date-parts":[[2016,7]]},"abstract":"<jats:p> With few exceptions, spontaneous crossing over does not normally occur in male Drosophila. Drosophila ananassae males show considerable amounts of crossing over. In wild males of D. ananassae from Asian (2008) and Brazilian populations (1986 and 2007) variable frequencies of meiotic crossing over, estimated from chiasmata counts, suggested the existence of factors controlling male crossing over in these populations. To corroborate for such prediction, we present data on spontaneous recombination in F<jats:sub>1<\/jats:sub> males of D. ananassae heterozygous for chromosomes of the same Brazilian populations (1986) and marker chromosomes using three testers stocks. Mean recombination value was low, although high variability existed between individual frequencies. Recombination frequencies between lines in each tester stock were not significantly different, excepting when the 3ple-px and 3ple-cy testers were compared (p &lt; 0.05). These two testers differ in respect to the regional distribution of crossovers. The occurrence of recombination in chromosomes 2 and 3 in F<jats:sub>1<\/jats:sub> males tested with e<jats:sup>65<\/jats:sup> se; bri ru was not related, suggesting they are under independent genetic control. Our data are consistent with proposed genetic factors controlling male crossing over in the tester stocks and to the presence of enhancers and suppressors of male crossing over segregating in the Brazilian populations (1986). <\/jats:p>","DOI":"10.1139\/gen-2015-0169","type":"journal-article","created":{"date-parts":[[2016,5,2]],"date-time":"2016-05-02T21:35:01Z","timestamp":1462224901000},"page":"493-500","update-policy":"https:\/\/doi.org\/10.1139\/csp-crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Male recombination in Brazilian populations of <i>Drosophila ananassae<\/i>"],"prefix":"10.1139","volume":"59","author":[{"given":"Beatriz","family":"Go\u00f1i","sequence":"first","affiliation":[{"name":"Department of Biology, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Muneo","family":"Matsuda","sequence":"additional","affiliation":[{"name":"Department of Biology, School of Medicine, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo 181-8611, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshiko N.","family":"Tobari","sequence":"additional","affiliation":[{"name":"Department of Biology, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"155","reference":[{"key":"refg1\/ref1","unstructured":"Ashburner, M., Golic, K.G., and Hawley, R.S. 2005. 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