Abstract
Several specimens of Mallards of the wild type, game farm varieties, and domesticated varieties, e.g., Pekin Duck, were obtained in the vicinity of St. Paul, Minnesota. Mitotic plates were obtained from feather pulp, embryonic tissue, and leucocyte cultures. The karyotype of the Mallard is typical of the Dabbling Ducks (Anatini) so far examined in this laboratory. The Z chromosome is 4th largest in size and is subtelocentric. It can be readily distinguished from numbers 5 and 6 in the better preparations. Hammar (1966) concluded that the Z chromosome is number 6.
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References
Ohno, S., C. Stenius, L. C. Christian, W. Beçak, and M. L. Beçak. 1964. Chromosomal uniformity in the avian subclass carinatae. Chromosoma (Berl.) 15, 280–288.
Hammar, B. 1966. The karyotypes of nine birds. Hereditas 55, 367–385.
Mott, C. L., L. H. Lockhart, and R. H. Rigdon. 1968. Chromosomes of the sterile hybrid duck. Cytogenetics 7, 403–412.
Bloom, S. E. 1969. Mitotic chromosomes of Mallard ducks. J. Heredity 60, 35–38.
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Beçak, M.L., Beçak, W., Roberts, F.L., Shoffner, R.N., Volpe, E.P. (1973). Anas platyrhynchos platyrhynchos (Mallard and its domesticated varieties) 2n = 80. In: Beçak, M.L., Beçak, W., Roberts, F.L., Shoffner, R.N., Volpe, E.P. (eds) Chromosome Atlas: Fish, Amphibians, Reptiles, and Birds. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-65751-1_46
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DOI: https://doi.org/10.1007/978-3-642-65751-1_46
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