There exists more than two sexes. It is necessary to take into account some factors which change manifestation (phenotype) of genetic or gonad's sex, namely a hormone sex. The women having inherent hyperplasia of adrenal glands cortex (it lead to increased levels of androgenes, male's hormones) have a male's body constitution, organs (muscles, heart, liver...) and have the reduced female sexual attributes. So, the levels of testosterone about 6 nanomol/litre at female top weightlifters were found out, though the norm is 0.6-3.1 nmol/litre. Such women in fact are not the females, and also represent intersexual deviant forms (relatively narrow pelvis and wide shoulders, index of masculinity - "trochanteric index" which is typical for males).
Study of children with genetic infringement like inherent hyperplasia of adrenal glands cortex (HAC or CAH). Because of enzymatic defect at the female individuals with CAH since the intrauterine period the high level of androgenes in adrenal glands is found out. As a result of it the behaviour of girls with CAH which is characterized for the boys is observed: the intensive charge of energy (power consumption), propensity to noisy street games and to traditionally masculine toys and pastime (Ehrhard, Baker, 1974; Ehrhard, Epstein, Money, 1968; S. Berenbaum, M. Hines, 1992). They better find bearings (have orientation) in the space (that is characteristic for the boys), than girl without CAH (Resnick et al., 1986).
So long as the development of the girls which is executed at the genetic program "XX", always outstrips the development of the majority of the boys who younger than 18-20 y.o., such girls can receive significant mental and physical advantage in comparison with the boys of this age.
Posted on Sep 8, 2009, 6:36 AM from IP address 95.37.147.28