I chose the ancient question; Is homosexuality genetic, evolutionary or learned? I will do my best to take each option and consider them carefully and fairly, as well as insert my own perspective as a form of response. As I present each option and its pros and cons, I will include my thoughts and thesis statements, which will be encouraged. This article will delve into the psychology and physiology of homosexuals. Studies over the last 20 years in 3 different countries have studied the genetic probability of being gay. Dr. Neil Whitehead, PhD., uses identical twins in his research on homosexuality. However, all studies reportedly conclude that homosexuals are NOT born that way. The scientific evidence used by Dr. Whitehead to support this claim is as follows: “Identical twins have the same genes or DNA. They are raised under equal prenatal conditions. If homosexuality is caused by genetics or prenatal conditions and one twin is gay, the co-twin should also be gay. Whitehead goes on to say that if homosexuality is genetic, the chances of both twins being gay should be 100%. After careful calculations and years of studies, he states that the probability of both twins being gay is 11% in men and 14% in women. Whitehead observes: “The predominant elements that create homosexuality in one identical twin and not in the other must be postnatal factors.” So it seems to me that homosexuality is NOT genetic, contrary to the implicit belief sung by Ms. Gaga in the song "Born This Way." Using Wikipedia, I read and took the parts of their articles that had been sourced and corrected for this next branch. of the paper. This time we will learn whether homosexuality is evolutionary or not. Sigmund Freud, a very notable psychologist... the focus of the article... and very scientifically supported. They all seem valid to me in some way, it seems to depend on the individual and their perspective on what makes them happiest. As stated in the first paragraph, twins do not share sexual orientation, so it cannot be genetic. It must come from a postpartum experience or circumstance. However, according to the 2nd/3rd paragraph, homosexuality could be developed, or learned, and equally undeveloped/unlearned, since we all start with a bisexual libido, it could simply be influenced in a certain way depending on the person. If you were raised a certain way, such as in a strictly Catholic environment, your bisexual libido will most likely be distanced from any gay libido you may have, and will only express your hetero libido. Being homosexual myself, I agree with Sigmund Freud's theories and ideas on homosexuality and how it is achieved.