Sex Determination in Triturus vulgaris Linn (Taeniatus Schneid)

Abstract

Evidence is brought together to support the hypothesis that in T. vulgaris the [female] is the homogametic sex. In a case of hybridization with T. cristatus, the [male] [male] were almost completely lacking from the progeny. The report by van Swinderen of neotenic, white [female] [female] occurring with normal [male] [male] is interpreted as evidence of a recessive mutation occurring so closely to the sex-determining gene that crossing over does not take place, and the gene can be manifested only in the homogametic, or [female] sex.