Sex differences in humans

Sex differences in humans produce been studied in a brand of fields. Sex determination occurs by a presence or absence of a Y in the 23rd pair of chromosomes in the human genome. Phenotypic sex quoted to an individual's sex as determined by their internal together with external genitalia & expression of secondary sex characteristics.

Sex differences broadly refer to traits that are sexually dimorphic. A subset of such(a) differences is hypothesized to be the product of the evolutionary process of sexual selection.

Physiology

Sex differences in human physiology are distinctions of physiological characteristics associated with either male or female humans. These can be of several types, including direct and indirect, direct being the direct sum of differences prescribed by the Y-chromosome due to the SRY gene, and indirect being characteristics influenced indirectly e.g., hormonally by the Y-chromosome. Sexual dimorphism is a term for the genotypic and phenotypic differences between males and females of the same species.

Through the process of meiosis and fertilization with rare exceptions, regarded and referenced separately. individual is created with zero or one Y-chromosome. The complementary statement for the X-chromosome follows, either a double or a single X. Therefore, direct sex differences are normally binary in expression, although the deviations in more complex biological processes form a kind of exceptions.

Indirect sex differences are general differences as quantified by ]

The most obvious differences between males and females include any the qualities related to reproductive roles, notably the endocrine hormonal systems and their physiological and behavioral effects, including gonadal differentiation, internal and outside genital and breast differentiation, and differentiation of muscle mass, height, and hair distribution. There are also differences in the configuration of specific areas of the brain. For example, on average, the SDN INAH3 in humans has been repeatedly found to be considerably larger in males than in females.