Hormones Chromosomes
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There are three main steroid hormones that are significant for sexual development: androgens, estrogens, and progestins. While all humans when healthy produce all three steroid hormones, females produce a much higher percentage of estrogens and progestins than males who produce a higher percentage of androgens. When these steroid hormones are produced during the prenatal stage of development, they program the brains of fetuses to arrange in either the male or female fashion. Once puberty is reached, these hormones prompt the development of internal genitalia to promote fertility and minor sex characteristics. Examples are facial hair in males and breast development in females. If there is not a surge in hormones during puberty, individuals experience little interest in sex.Sexual development is a stage development consisting of five stages: genetic, gonadal, hormonal, internal genitalia, and external genitalia. These occur in either the male or female fashion. The first stage is genetic because of the two chromosomes known as pair 23 (XX and XY). This inheritance is significant, but the fetus remains sexually dimorphic until six weeks of age. At this time those who have the XY pattern begin androgen production and Mullerian-inhibiting substance during the third month of development. This causes the fetus to masculinize, which catalyze testes development, degeneration of Mullerian structures, and the development of Wolffian
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Approximate Word count = 863
Approximate Pages = 3 (250 words per page)
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