Gynandromorph is an animal that possesses both male and female characteristics because it is genetically a mosaic, i.e. some of its cells are genetically male and others are female. This phenomenon is found particularly in the insects but also appears in the birds and mammals; it is often due to the loss of an X chromosome in a stem cel! of a female (XX), so that all tissues derived from that cell are phenotypically male. Intersex is an organism displaying characteristics that are intermediate between those of the typical male and typical female of its species. For example, a human intersex may have testes that fail to develop, so that although he is technically a man he has the external appearance of a woman. In super female and super male the number of female and male sex chromosomes, respectively, is above normal.