homosexuality is an unchangeable trait that you're born with

Since Pro has not set the BoP, we can assume that the BoP is placed on Pro. All I need to do is provide a reasonable case homosexuality is something you are not born with.My Case:I would like to assert homosexuality is caused by nurture; not nature. In biology, we learn that we have traits. These can be determined by certain factors. These factors are physical, environment, and spiritual in nature. A physical factor would be a certain level of melanin causing pigmentation. An environmental factor could be growing up in a bad place in town; causing the person to be on constant alert. A spiritual factor could be someone keeping their virginity until marriage for their religion. While some traits are brought on by physical factors, our behavior is mostly shaped by our environmental and spiritual factors. A human's sexuality falls into this category of being shaped by environmental factors. Eight major studies in identical twins show that homosexuality is not genetic. As quoted by the article:"Identical twins have the same genes or DNA. They are nurtured in equal prenatal conditions. If homosexuality is caused by genetics or prenatal conditions and one twin is gay, the co-twin should also be gay. “Because they have identical DNA, it ought to be 100%,” Dr. Whitehead notes. But the studies reveal something else. “If an identical twin has same-sex attraction the chances the co-twin has it are only about 11% for men and 14% for women.” Because identical twins are always genetically identical, homosexuality cannot be genetically dictated. “No-one is born gay,” he notes. “The predominant things that create homosexuality in one identical twin and not in the other have to be post-birth factors.” The predominant things that create homosexuality in one identical twin and not in the other have to be post-birth factors. Dr. Whitehead believes same-sex attraction (SSA) is caused by “non-shared factors,” things happening to one twin but not the other, or a personal response to an event by one of the twins and not the other. For example, one twin might have exposure to pornography or sexual abuse, but not the other. One twin may interpret and respond to their family or classroom environment differently than the other. “These individual and idiosyncratic responses to random events and to common environmental factors predominate,” he says." (1)"Humans display a wide range of sexual feelings and behavior. Nowhere is this more prominent than in American culture which is saturated with images and references to sex and romantic love from television advertisements to billboard displays. Often, our identities as individuals are wrapped up with our romantic tendencies and how these play out in our relationships. Sometimes an individual’s sexual behavior is used as a barometer for his or her moral or religious beliefs. Our collective sense of how human sexuality should be expressed is revealed through the rights and liberties that structure our lives as citizens. We are sexual beings, yet this does not mean that we are born homosexual, bisexual, or heterosexual. Our sexual expression can change over time, towards different people, through different experiences. A lack of understanding about this type of human variability often leads to a perspective that our genes define who we are. Each of the above areas of research displays findings that hinge on the assumption that a given individual’s sexual expression neatly fits into the categories “straight” and “gay.” By not considering evidence of human sexual fluidity, debates regarding origins and biology are not substantial or complete. Current efforts fail to tell the whole story. And even if we were to accept that the assigned sexual orientation of the individuals participating in these studies accurately reflected their lifelong expression, conclusive proof of a link between this and their genes has yet to be found."(2)It is clear that I have made the point that homosexuality depends on factors that are determined outside the womb. Thus, I have fulfilled my BoP. However, if my opponent still wants evidence, I'll be happy to provide Pro which such material. How can you change a person's sexuality? You can change it under the right environmental conditions. Rebuttals:Addressing opponent's 1st and 2nd argument:"But all of this evidence rests on the notion that sexual orientation is fixed and that individuals are either “straight” or “gay.” Researchers in these studies did not indicate whether individuals in their sample provided an extensive account of their sexual histories and tastes. Rather, individuals in the samples were simply asked to define their sexual orientation. In doing this, researchers set up a false dichotomy whereby the individuals studied are forced into one of two categories neither of which may accurately account for the full range of their sexual expression. Additionally, it is difficult to conclude with certainty that because a trait shows up more often among biologically-related siblings, it is inherited. In fact, many such traits appear to be linked to distinctly non-biological factors. Diet, drug addiction, religious and political orientation, and career paths are just a few of the behaviors that cluster in families due to shared social influences. Indeed, a shared environment can often produce a clustering of all types of behavior patterns. It is doubtful that any study could be designed with sufficient sensitivity to exclude this possibility. The methods used in family linkage studies, which depend upon recruitment from gay and lesbian magazines, websites, and organizations, carry a clear risk of ascertainment bias. Gay brother pairs may be more interested in responding than gay men with straight brothers, given the potential for homophobia among siblings and the substantial number of homosexuals who are “in the closet” toward their families. Twins or siblings who are both gay might find the subject interesting or already suspect a genetic basis of their shared sexual orientation, thus making them more likely to participate . In order to exclude these potentially confounding factors, more recent studies have drawn participants from random samples. A study in 2000 of 4,500 twins from the Australian Twin Registry by Bailey and colleagues showed only a 30% rate of homosexuality shared between both male and female identical twins." (2)Also, sources. Provide them. However, this proves such sources to be unfit to use.Response to argument 3:I have addressed this in my earlier argument.Response to argument 4, 5, 6, and 7:Thus, you admit some do change. This contradicts your stance that homosexuality is set from inside the womb. Also, source. Provide them.There are stories of people changing their sexuality in time; whether it be to heterosexuality of homosexuality. (3) (4) Again, this contradicts your claim. To sum them up, these are stories where the therapy actually worked and when people decided to be gay. In fact, a woman in source number four is a homosexual; yet acknowledges said therapies work in some occasions. Response to argument 8 and 9:Refer to my earlier argument.As for the "God" argument, I used to be Catholic. They taught in the Church that humans were given the right to autonomy; which is the ability to make an unbiased decision. With certain decisions, environmental factors could arise causing homosexuality; fulfilling God's right for our autonomy.I'm out of characters. I appreciate your time. Anime OP:1. http://tinyurl.com... 2. http://tinyurl.com...3. http://tinyurl.com... 4. http://tinyurl.com...