XX tissues are inherently mosaics, because they are composed of a mixture of cells in which the active X chromosome is either maternal or paternal. Although this theory is more complex, and implies that multiple, parallel-acting and interacting sex-biasing factors contribute to the sexual differentiation of tissues, it nevertheless still provides a simplifying conceptual framework for a complex set of phenomena.
The Y-encoded Sry gene initiates masculine differentiation of the gonads, making gonadal hormones different in males compared to females, thus indirectly causing major sex differences in tissue function.
Diagnostic procedures may include a newborn screening test for CAH, hormonal studies blood test and an ultrasound. These factors act in an integrative manner but may be expressed differently in males and females.
For example, some studies claim girls are, on average, more verbally fluent than boys, but boys are, on average, better at spatial calculation. However, other tissues such as the hypothalamus, skin, cardiovascular tissue, and bone are also substantially affected.
Sex differences and their relevance to human health can be examined through the use of cross-species comparisons.
The effects of pregnancy, lactation, and parity are obviously important to the health of atypical sex differentiation in human in Laval later in their lives but are not addressed specifically in this report. Partners can switch between male and female roles within seconds and may take turns fertilizing each other's eggs.
As the testes grow and start to produce testosterone, the penis, scrotum and urethra form. Current research varies in its level of attention to these matters. Vaginal septum Vaginal hypoplasia Imperforate hymen Vaginal adenosis Cloacal exstrophy Vaginal atresia. As suggested by the reproductive processes of some species and punctuated by recent successful efforts at cloning of some species, sexual reproduction is not necessary for species perpetuation.
Although we are just beginning to appreciate the complex interactions that require or involve such compensation, we have almost no information about which sex-biased effects interact with others. General biological introduction. Gender and health: Relational, intersectional, and biosocial approaches.
Sex differences in ischemic stroke sensitivity are influenced by gonadal hormones, not by sex chromosome complement. Xist has not, however, traditionally been considered a sex-determining or sex-differentiating gene, despite it profound female-specific effects on cells.