<unk>  have been studied in a variety of fields.<unk>  determination occurs by the presence or absence of a Y in the 23rd pair of chromosomes in the<unk> genome. Phenotypic<unk>  refers to an individual's<unk>  as determined by their internal and external genitalia and expression of secondary<unk>  characteristics.<unk><unk>  generally refer to traits that are<unk> ually dimorphic. A subset of such<unk>  is hypothesized to be the product of the evolutionary process of<unk> ual selection.
Sex differences in humans
risks of Coronary artery disease
risks of Hypertriglyceridemia
risks of Myocardial infarction
risks of Appendix cancer
risks of Somatization disorder
Sleep problems in women
risks of Obsessive–compulsive disorder