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  2. One-sex and two-sex theories - Wikipedia

    en.wikipedia.org/wiki/One-sex_and_two-sex_theories

    The change from the one-sex model to the two-sex model helped to create a new understanding of gender in the meaning of human history. There is an "increasing differentiation of male and female social roles; conversely, a greater differentiation of roles and a greater female 'delicacy and sensibility' are [seen as] signs of moral progress."

  3. Male reproductive system - Wikipedia

    en.wikipedia.org/wiki/Male_reproductive_system

    A.—Diagram of the primitive urogenital organs, from 'Diagrams to show the development of male and female generative organs from a common type' * w, w. Right and left Wolffian ducts. The observable, visual differences become apparent between male or the female reproductive organs are not seen initially.

  4. Sex differences in human physiology - Wikipedia

    en.wikipedia.org/wiki/Sex_differences_in_human...

    The pelvis is, in general, different between the human female and male skeleton. [12] [13] Although variations exist and there may be a degree of overlap between typically male or female traits, [12] [13] 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 ...

  5. Sexual differentiation in humans - Wikipedia

    en.wikipedia.org/wiki/Sexual_differentiation_in...

    The human Y chromosome showing the SRY gene which codes for a protein regulating sexual differentiation. Sexual differentiation in humans is the process of development of sex differences in humans . It is defined as the development of phenotypic structures consequent to the action of hormones produced following gonadal determination. [ 1 ]

  6. Is it a boy or girl? 24 old wives' tales about predicting a ...

    www.aol.com/news/boy-girl-24-old-wives-214126391...

    The only REAL ways to find out are scientific methods, like ultrasound (which can have a margin of error, especially if a boy is “shy” in the photos), amniocentesis, or non-invasive genetic ...

  7. List of related male and female reproductive organs - Wikipedia

    en.wikipedia.org/wiki/List_of_related_male_and...

    This list of related male and female reproductive organs shows how the male and female reproductive organs and the development of the reproductive system are related, sharing a common developmental path. This makes them biological homologues. These organs differentiate into the respective sex organs in males and females.

  8. Is it a boy or a girl? 24 old wives' tales about predicting a ...

    www.aol.com/news/signs-youre-having-boy-girl...

    The only REAL way to find out are scientific methods, like ultrasound (which can have a margin of error, especially if a boy is "shy" in the photos), amniocentesis, or non-invasive genetic testing ...

  9. Development of the reproductive system - Wikipedia

    en.wikipedia.org/wiki/Development_of_the...

    Diagrams to show the development of male and female generative organs from a common type. A.—Diagram of the primitive urogenital organs in the embryo previous to sexual distinction. 3. Ureter. 4. Urinary bladder. 5. Urachus. cl. Cloaca. cp. Elevation which becomes clitoris or penis. i. Lower part of the intestine. ls.

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