Abstract
Both karyotypes presented here were obtained from squash preparations of intestine. The female is heterogametic. The sex chromosomes, male-ZZ, female-ZW correspond to the 4th pair of macrochromosornes.
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References
Beçak, W.: Constituição cromossômica e mecanismo de determinação do sexo em ofidios sul-americanos. I. Aspectos cariotípicos. Mem. Inst. Butantan 32: 37, 1965.
Beçak, W.: Constituição cromossômica e mecanismo de determinação do sexo em ofídios sul-americanos. II. Cromossomos sexuais e evolução do cariótipo. Mem. Inst. Butantan. Simp. int. 33: 775, 1966.
Beçak, W.: Karyotypes, sex chromosomes and chromosomal evolution in snakes. In “Venomous Animals and their Venoms” (W. Bücherl, E. Buckley and V. Deulofeu, eds.) Vol. I, p. 53. Academic Press, New York 1968.
Beçak, W. and Beçak, M. L.: Cytotoxonomy and chromosomal evolution in Serpentes. Cytogenetics 8: 247, 1969.
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Beçak, M.L., Beçak, W., Roberts, F.L., Shoffner, R.N., Volpe, E.P. (1973). Bothrops alternatus (Duméril, Bibron et Duméril) (Urutu cruzeiro; Jararaca rabo de porco) 2n = 36. 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_19
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