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Word Count: 866
This article attempts to identify the biological causes of homosexuality The article introduces the different ideas that many different scientists and psychologists have about the causes of homosexuality One idea focuses on one of the most obscure features that distinguish the two sexes- how our inner ears respond to clicking sounds The theory behind this idea was that hormone levels in the womb rather than genetic or social factors determine whether some people become gay or lesbian To prove this relationship tests were conducted on girls who shared their mothers womb with their twin brother to find if there were higher levels of male hormones It was concluded that higher-than-average levels of hormones before birth and a part of the brain had influenced their sexual preferences It was the first serious claim by scientists to have discovered a physiological characteristic that could distinguish lesbians from straight women Other researchers claim that lesbian woman have masculinised hands with ring fingers that are longer than their pointer fingers and gay men having feminine hands The possibility that a persons sexuality can be determined by simply looking at their hands demonstrates why the scientific study of gayness inspires both fury and fascination Researchers have broadened their search for clues to explain homosexuality investigating factors such as the birth order of gay people their number of siblings parental age finger prints penis size age at puberty left- or right- handedness and mothers stress levels during pregnancy An epidemiologist conducted a study which found that the genetic influences on homosexuality are weak More importantly he believes that homosexuality is an essential part of human sexuality Many gay people consider all this research to be a waste of money as it is an unwanted distraction from the real issues of concern such as violence and discrimination A more famous discovery was the isolation of a gay gene The DNA of
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