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Raised Gay or Born That Way?

Raised Gay or Born That Way?. An analysis of the Nature vs. Nurture debate on Homosexuality By: Ally Stanhope SBI4U. What is Homosexuality?. Homosexuality: sexual desire or behaviour directed toward a person or persons of one’s own sex.

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Raised Gay or Born That Way?

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  1. Raised Gay or Born That Way? An analysis of the Nature vs. Nurture debate on Homosexuality By: Ally Stanhope SBI4U

  2. What is Homosexuality? Homosexuality: sexual desire or behaviour directed toward a person or persons of one’s own sex. http://www.istockphoto.com/file_thumbview_approve/8168607/2/istockphoto_8168607-gay-pride-gender-symbols.jpg

  3. Possible Causes of Homosexuality http://www.cdc.gov/ncbddd/BD/images/genetics.jpg http://extension.umd.edu/images/family.jpg

  4. Genetics • Pedigree study : Dean Hammer • Twin Study : J. Michael Bailey and Richard C. Pillard • Hormone Experiment : Richard Green and Ronald Hellmann http://deathby1000papercuts.com/wp-content/uploads/2009/04/3d_model_dna_w_phosphate_1.jpg

  5. Dean Hammer’s Study • Studied the pedigrees of 32 pairs of brothers that were both homosexual • Determined the “homosexual gene” is passed on from mother to son • Studied the brothers’ DNA • 2/3 (22 out of the 32 sets) of the brothers shared exactly the same type of genetic material • Discovered that a majority of the brothers shared the same sequence on the Xq28 region of the X chromosome. http://faculty.ucc.edu/biology-atsma/pics/pedigree.gif

  6. studied the sexual preferences of sets of twins where at least one twin was homosexual Twin Study • 52% of the identical twins both shared the same homosexual preference • 22% of the fraternal twins both shared the same homosexual preference 56 pairs of identical twins, 54 pairs or fraternal twins, 57 pairs of non-biological siblings who lived with adoptive parents. (all males) • 11% of adopted twins both shared the same homosexual preference http://river66.files.wordpress.com/2008/04/identical-twins.jpg

  7. Twin Study Continued • 48% of identical twins were both homosexual • 16% of fraternal twins were both homosexual • 6% of non-biological siblings were both homosexual

  8. all participants had estrogen injections Hormone Study • After 4 days…. • women’s luteinizing hormone level was 200% of baseline values • heterosexual male’s values were 88% • homosexual male’s were 138% studied 17 heterosexual men, 14 homosexual men, and 12 heterosexual women http://4.bp.blogspot.com/_s03XW1ZvVvE/Sp9wdnP8AMI/AAAAAAAAAo0/yvCO_C7Osiw/s400/brain-1.jpg

  9. Environment http://www.wikidoc.org/images/6/6f/Sigmund_Freud-loc.jpg

  10. 21st Cenutry • today’s generation is more accepting of homosexuality • there are still people, for example members of religious groups, that do not believe in homosexuality • with today’s technology, people who do not believe in homosexuality could have their child’s genes altered, like a designer baby, if a specific gene was found to cause homosexuality.

  11. References Steen, Grant R. DNA & Destiny : Nature & Nurture in Human Behavior. N.p.: n.p., 2001. N. pag. Science Reference Center. Web. 8 Nov. 2009. <http://web.ebscohost.com/ehost/ detail?vid=1&hid=6&sid=f1760127-f15b-43ae-824f-efcdc19f24da%40sessionmgr12&bdata=JnNpdGU9ZWhvc3QtbGl2 ZQ%3d%3d>. Bower, B. "Gene influence Tied to Sexual Orientation." Science News: 6. Science Reference Center. Web. 6 Nov. 2009. <http://web.ebscohost.com/ehost/ detail?vid=1&hid=6&sid=116c327b-f9a1-49be-8f16-0af6b49794b2%40sessionmgr12&bdata=JnNpdGU9ZWhvc3QtbGl2 ZQ%3d%3d#db=sch&AN=9201202131>. Silberner, J. "Hormone Marker For Homosexuality?" Science News: 198-199. Science Reference Center. Web. 8 Nov. 2009. <http://web.ebscohost.com/ehost/ detail?vid=1&hid=6&sid=6f33a4b4-e800-42cb-a1f3-8a90f52ccac8%40sessionmgr13&bdata=JnNpdGU9ZWhvc3QtbGl2 ZQ%3d%3d#db=sch&AN=8807094>. Newman, Dara. "The Genetics of Homosexuality." Serendip. N.p., 18 Jan. 2008. Web. 6 Nov. 2009. <http://serendip.brynmawr.edu/exchange/node/1925>. "Twin Studies and Homosexuality." World Policy Institute . N.p., n.d. Web. 8 Nov. 2009. <http://www.worldpolicy.org/projects/globalrights/sexorient/twins.html>.

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