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Some chromosomal sex determination systems in animals A sex-determination system is a biological system that determines the development of sexual characteristics in an organism . [ 1 ] Most organisms that create their offspring using sexual reproduction have two common sexes, males and females , and in other species, there are hermaphrodites ...
Female anatomy is distinguished from male anatomy by the female reproductive system, which includes the ovaries, fallopian tubes, uterus, vagina, and vulva. An adult woman generally has a wider pelvis, broader hips, and larger breasts than an adult man. These characteristics facilitate childbirth and breastfeeding.
People who exhibit a combination of both masculine and feminine characteristics are considered androgynous, and feminist philosophers have argued that gender ambiguity may blur gender classification. [ 34 ] [ 35 ] Modern conceptualizations of femininity also rely not just upon social constructions, but upon the individualized choices made by women.
Secondary sex characteristics are particularly evident in the sexually dimorphic phenotypic traits that distinguish the sexes of a species. [5] In evolution, secondary sex characteristics are the product of sexual selection for traits that show fitness, giving an organism an advantage over its rivals in courtship and in aggressive interactions. [6]
[14] [15] Although variations exist and there may be a degree of overlap between typically male or female traits, [14] [15] the pelvis is the most dimorphic bone of the human skeleton and is therefore likely to be accurate when using it to ascertain a person's sex. [15] It differs both in overall shape and structure.
Both male and female use voice, face, and other physical characteristics [34] to assess a potential mate's ability to reproduce, as well as their health. [33] Together with visual and chemical signals, these crucial characteristics which are likely to enhance the ability to produce offspring , as well as long-term survival prospects, can be ...
Some gynosexual people are attracted to feminine people of all genders, while others are attracted just to feminine people of one gender, says Justin Lehmiller, Ph.D., a member of the Men's Health ...
In a female, on the other hand, absence of these levels of androgens results in development of typically female genitals. [4] Following this, sexual differentiation of the brain occurs; sex hormones exert organizational effects on the brain that will be activated in puberty. [4]