Homosexuality has become a huge issue in our culture all across the country. Gay activists have been making their voices heard throughout the country and have been drawing attention to their cause.
One of the issues surrounding homosexuality leads back to the long-lived debate of nature vs. nurture. Is a person born homosexual? Or nurtured to become homosexual? Homosexuality is a trait spawned of genetics and genetics only. One cannot be nurtured to become homosexual or not.
There is the twin study issue. Probably Nature’s best argument when it comes to studies. Jerry Levey and Mark Newman for example, were twins who did not meet until the age of 30. When they were reunited, both had similar mustaches and hairstyles, aviator glasses, big belt buckles and big key rings. Each was a volunteer firefighter and made his living installing safety equipment. Each drank Budweisder and crushed the cans when he finished. Jerry and Mark are the rule experts say, not the exception. Researchers found that 70 percent of the intelligence quotient is accounted for by genes, the strongest correlation found for any characteristic. Genetics accounts for about 50 percent of personality difference, including traits such as extroversion, 50 percent of religiosity, including how often someone attends religious events and about 40 percent for job variations. (Maugh 1)
In December of 1991, Michael Bailey of Northwestern University joined Richard Pillard of the Boston University School of Medicine in publishing a study of homosexuality in twins. Their conclusion is that sexual orientation is something one is born with. Bailey and Pillard surveyed homosexual men about their brothers, and they found some statistics that were rather unexpected. Of the homosexuals who had identical twin brothers, 52 percent of those twins were also homosexual. 22 percent of those who had fraternal twins said that their twin was gay, and only eleven percent of those who had adopted siblings said that their adopted brothers were also homosexual. Bailey and Pillard attributed the differences in these percentages to the difference in the amount of genetic material shared. Since identical twins have the same genetic code, they are far more likely to share sexual orientation than fraternal twins. In the same way, it is obvious that fraternal twins have more in common genetically than do their adopted siblings.
Much media attention has been given to a number of recent attempts by researchers to associate homosexual behavior with certain brain structures, hormones or genes. Such biological explanations may relate to one another, since brain structures may develop under the influence of hormones, which in turn operate under instructions from the genetic code. The research is only beginning, and the early theories that have garnered much media attention have not yet withstood the crucial test of replication by other researchers. Below is a study of a researcher that takes nature over nurture when it comes to homosexuality.