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  2. Sex assignment - Wikipedia

    en.wikipedia.org/wiki/Sex_assignment

    Sex assignment. Sex assignment (also known as gender assignment[1][2]) is the discernment of an infant's sex, typically made at birth based on an examination of the baby's external genitalia by a healthcare provider such as a midwife, nurse, or physician. [3] In the vast majority of cases (99.95%), sex is assigned unambiguously at birth.

  3. Shettles method - Wikipedia

    en.wikipedia.org/wiki/Shettles_Method

    Shettles method. The Shettles Method is a child conception idea that is reputed to help determine a baby's sex. It was developed by Landrum B. Shettles in the 1960s and was publicized in the book How to Choose the Sex of Your Baby, coauthored by Shettles and David Rorvik. The book was first published in 1971 and has been in print in various ...

  4. Gestational age - Wikipedia

    en.wikipedia.org/wiki/Gestational_age

    According to the WHO, a preterm birth is defined as "babies born alive before 37 weeks of pregnancy are completed." [20] According to this classification, there are three sub-categories of preterm birth, based on gestational age: extremely preterm (fewer than 28 weeks), very preterm (28 to 32 weeks), moderate to late preterm (32 to 37 weeks). [20]

  5. Prenatal hormones and sexual orientation - Wikipedia

    en.wikipedia.org/wiki/Prenatal_hormones_and...

    Sexual orientation. The hormonal theory of sexuality holds that, just as exposure to certain hormones plays a role in fetal sex differentiation, such exposure also influences the sexual orientation that emerges later in the individual. Prenatal hormones may be seen as the primary determinant of adult sexual orientation, or a co-factor.

  6. Sex selection - Wikipedia

    en.wikipedia.org/wiki/Sex_selection

    Sex selection. Sex selection is the attempt to control the sex of the offspring to achieve a desired sex. It can be accomplished in several ways, both pre- and post-implantation of an embryo, as well as at childbirth. It has been marketed under the title family balancing. According to the United Nations Population Fund, the reasons behind sex ...

  7. Growth chart - Wikipedia

    en.wikipedia.org/wiki/Growth_chart

    A growth chart is used by pediatricians and other health care providers to follow a child's growth over time. Growth charts have been constructed by observing the growth of large numbers of healthy children over time. The height, weight, and head circumference of a child can be compared to the expected parameters of children of the same age and ...

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