Absence of temperature-dependent sex determination in congeneric sexual and parthenogenetic Cnemidophorus lizards.
Eggs from congeneric gonochoristic and parthenogenetic whiptail lizards were incubated at various temperatures. There was no significant deviation from a sex ratio of one-half in the sexual species at any temperature, whereas no males were produced in the parthenogenetic species. Temperature-dependent sex determination appears to be completely absent in these lizards.
Crews
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Department of Zoology, University of Texas, Austin 78712.
D000818:Animals; D005260:Female; D008116:Lizards / Q000196:embryology*; D008297:Male; D010312:Parthenogenesis; D012732:Sex Determination Analysis; D012744:Sex Ratio; D013696:Temperature