Journal
JOURNAL OF FISH BIOLOGY
Volume 73, Issue 2, Pages 456-462Publisher
WILEY
DOI: 10.1111/j.1095-8649.2008.01902.x
Keywords
cytogenetics; evolution; freshwater fish; Gasterosteidae; heterogamety; sex determination
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Specimens from two freshwater populations of the ninespine stickleback Pungitius pungitius in Poland showed morphologically differentiated sex chromosomes. A heteromorphic pair of chromosomes appeared only in male diploid cells. The Y chromosome was the largest chromosome in the P. pungitius karyotype. (C) 2008 The Authors Journal compilation (C) 2008 The Fisheries Society of the British Isles.
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