In the X-Y and Z-W systems of sex determination, which sex is the heterogametic sex, the male or female?
In contrast to the XY sex-determination system and the X0 sex-determination system, where the sperm determines the sex, in the ZW system, the ovum determines the sex of the offspring. Males are the homogametic sex (ZZ), while females are the heterogametic sex (ZW).
Comments
Leave a comment