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  2. Biology and sexual orientation - Wikipedia

    en.wikipedia.org/wiki/Biology_and_sexual_orientation

    Identical twin studies are a useful mechanism for assessing the role of genes and environment. Twin studies have also found that among twins with differing sexual orientations, homosexual twins were significantly more gender nonconforming than their heterosexual co-twin, and that this was noticeable from a young age. [29] Bailey states:

  3. Son preference in China - Wikipedia

    en.wikipedia.org/wiki/Son_preference_in_China

    In China, the bias towards male over female offspring is demonstrated by the sex ratio at birth (SRB). [2] Key factors driving the son preference include the economic impact on families, since men are expected to care for their parents in old age, while women are not. [3] Further, Chinese agrarian society influences sex preference, as ...

  4. 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 ...

  5. Astrology - Wikipedia

    en.wikipedia.org/wiki/Astrology

    Astrology is a range of divinatory practices, recognized as pseudoscientific since the 18th century, [1][2] that propose that information about human affairs and terrestrial events may be discerned by studying the apparent positions of celestial objects. [3][4][5][6][7] Different cultures have employed forms of astrology since at least the 2nd ...

  6. Chang and Eng Bunker - Wikipedia

    en.wikipedia.org/wiki/Chang_and_Eng_Bunker

    Raleigh Register April 13, 1853 In 1840, a profile of the twins in the Tennessee Mirror made clear the twins' intentions to marry. Many newspapers regularly joked about this, discouraging their marriage not just with objections over the twins' disability but also because of their race. Nevertheless, on April 13, 1843, Baptist preacher Colby Sparks officiated the weddings between Eng and Sarah ...

  7. He Jiankui - Wikipedia

    en.wikipedia.org/wiki/He_Jiankui

    He Jiankui ([xɤ̂ tɕjɛ̂nkʰwěɪ]; 贺建奎; born 1984) is a Chinese biophysicist.He was named as the inaugural director of the Institute of Genetic Medicine at Wuchang Technical College, a private undergraduate college in Wuhan, in September 2023. [2]

  8. Juedai Shuangjiao - Wikipedia

    en.wikipedia.org/wiki/Juedai_Shuangjiao

    Juedai Shuangjiao (traditional Chinese: 絕代雙驕; simplified Chinese: 绝代双骄; pinyin: Jué Dài Shuāng Jiāo; lit. 'The Peerless Proud Twins') is a wuxia novel by Gu Long first published in 1966. The novel is about a pair of twin brothers who, because of a feud between two formidable martial artists, were separated at birth and ...

  9. Conjoined twins - Wikipedia

    en.wikipedia.org/wiki/Conjoined_twins

    Conjoined twins, popularly referred to as Siamese twins, [ 1 ][ 2 ] are twins joined in utero. [ a ] It is a very rare phenomenon, estimated to occur in anywhere between one in 49,000 births to one in 189,000 births, with a somewhat higher incidence in Southwest Asia and Africa. [ 5 ] Approximately half are stillborn, and an additional one ...

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