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The Y chromosome is dominant and carries the signal for the embryo to begin growing testes.Women have higher levels of estrogen and progesterone than they do of testosterone; men have more testosterone than estrogen and progesterone.As women caught on and began wearing high heels, male heels slowly became shorter and fatter as female heels grew taller and thinner.Over time, the perception of the high heel changed to its current sociological state: feminine.It varies from society to society and can be changed." Gender roles in particularly patriarchal societies are much more rigid than those in more liberal countries.
The reason is that pink, being a more decided and stronger color, is more suitable for the boy, while blue, which is more delicate and dainty, is prettier for the girl." Move forward 100 years and you would be hard-pressed to find a single male baby dressed in pink in the industrialized world.For some people, their gender identity does not fit neatly into one of those two choices."External manifestations of gender, expressed through one's name, pronouns, clothing, haircut, behavior, voice, or body characteristics.Society identifies these cues as masculine and feminine, although what is considered masculine and feminine changes over time and varies by culture." To conclude, in general terms, "sex" refers to biological characteristics and "gender" refers to the individual's and society's perceptions of sexuality and the malleable concepts of masculinity and femininity. It is genetics which defines the sex of an individual.Women have 46 chromosomes including two Xs and men have 46 including an X and a Y.