Table 1

Sex reversal


Female-producing temperatures
Male-producing temperatures

XX (ZW)
Female (in accordance with genotype)
Female OR male (in discordance with genotype)
XY (ZZ)
Male OR female (in discordance with genotype)
Female (in accordance with genotype)

The combination of genotypic and temperature-dependent sex determination allows a phenomenon known as sex reversal, where the phenotypic sex does not always agree with the genotypic directions.

Manolakou et al. Reproductive Biology and Endocrinology 2006 4:59   doi:10.1186/1477-7827-4-59