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Science 24 February 1967:
Vol. 155. no. 3765, pp. 1028 - 1029
DOI: 10.1126/science.155.3765.1028
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Articles

Sex Chromosomes in Lizards

Charles J. Cole 1, Charles H. Lowe 1, and John W. Wright 2

1 Department of Zoology, University of Arizona, Tucson 85721
2 Department of Biological Sciences, Western New Mexico University, Silver City 88061

Karyotypes of many species of the genus Sceloporus support the generalization that there are no morphologically recognizable sex chromosomes in lizards; however, there is a marked sexual dimorphism in the karyotypes of Sceloporus jarrovi and Sceloporus poinsetti. During meiosis in males, whose diploid number of chromosomes is 31, preferential segregation of chromosomes from a trivalent results in heterogamety.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Derived X chromosome in the turtle genus Staurotypus.
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Science 206, 1410-1412
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Science. ISSN 0036-8075 (print), 1095-9203 (online)