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Gender is generally conceived as a set of characteristics or traits that are associated with a certain biological sex (male or female). The characteristics that generally define gender are referred to as masculine or feminine. In some cultures, gender is not always conceived as binary, or strictly linked to biological sex.
Progesterone is a steroid hormone synthesized in both male and female brains. It contains characteristics found in the chemical nucleus of both estrogen and androgen hormones. [38] As a female sex hormone, progesterone is more significant in females than in males.
In both males and females, the sex organs consist of two structures: the internal genitalia and the external genitalia. In males, the gonads are the testicles and in females, they are the ovaries . These are the organs that produce gametes (egg and sperm), the reproductive cells that will eventually meet to form the fertilized egg ( zygote ).
In 45% of mammal species, males are larger than females, in 39%, males and females are the same size and in 16% of mammals, females are larger than males. [90] Both genes and hormones affect the formation of many animal brains before "birth" (or hatching), and also behaviour of adult individuals. Hormones significantly affect human brain ...
Men were only better at recognizing specific behaviour which includes anger, aggression and threatening cues. [68] A 2012 study published in the journal Neuropsychology with a sample of 3,500 individuals from ages 8–21, found that females outperformed males on face memory and all social cognition tests. [29]
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 result of differences prescribed by the Y-chromosome (due to the SRY gene ), and indirect being characteristics influenced ...
Sex differences in human physiology are distinctions of physiological characteristics associated with either male or female humans. These differences are caused by the effects of the different sex chromosome complement in males and females, and differential exposure to gonadal sex hormones during development.
Psychologist Deborah L. Best argues that primary sex characteristics of men and women, such as the ability to bear children, caused a historical sexual division of labor and that gender stereotypes evolved culturally to perpetuate this division. [71] The practice of bearing children tends to interrupt the continuity of employment.