If genes determine sexual orientation?
Source:When it comes to genetic factors – and all, very difficult to resist the so-called genetic determinism, according to which the presence of a particular gene determines your qualities, behavior, inclinations and so on. According to the hypothesis of this «genetic doom», the presence of a gene responsible for a tendency to, for example, alcoholism, should make you a alcoholic. Agree, with this at least debatable. However, do genes determine human behavior – as, for example, in the case of the tendency to aggressive behaviour – there is no of the gene do not do. However, the genes and when they are included in the job depends on the environment. And this is, perhaps, the most important thing we all need to remember – the way a living creature behaves depends on two concomitant factors: genes and environment. with in more simple terms, genes are meaningless outside the context of the environment. But, in that case, it is possible to say about sexual behavior? What impact genes have on our sexual preferences?
Sexual orientation – what you need to know?
According to Professor Robert Sapolsky, neuroendocrinology from Stanford University, before the topic of genetics and sexuality people just can't resist. The theme of sexual orientation really has always interested scientists and not only them, but attempts to explain human sexual behavior were over – and the introduction of the death penalty for choosing «wrong» partner and long-term imprisonment and stigmatizacija people whose sexual orientation is not the same as «need». If you think that only a few aspects of human biology are so complex – and politically dangerous – as sexual orientation. But what science says about this?
In fact, a whole string of scientific studies confirms the presence of heritability of sexual orientation, however, to a certain extent. Most revealing are – it turned out that about half of their sexual orientation is the same. Speaking very simple words – if you have a twin brother and he's gay, then with a probability of 50% you also prefer men. And here at blood brothers (not twins), the risk of overlap of sexual orientation is only 9%. This suggests that the more you have with the other person shared genes, the more likely it is that your sexual orientation will be the same.
terms of genes, the propensity towards same-sex relations are justified
However, despite the entrenched idea that one or more genes make a person prone to the results of the latest scientific studies refute it. The analysis, which studied the genome of almost half a million men and women showed that, although genetics is involved in who people choose to have sex, no specific genetic markers responsible for such behavior do not exist. However, the researchers wonder whether an analysis that addressed the genes associated with sexual activity, not desire to help to make any real conclusions about the sexual orientation of Homo Sapiens.
Predefined sexual?
As the researchers write in their work , sexual behavior is a complex behavior, in which genetics definitely plays a role, however, is not the main. Also be aware that genetic research conducted over the past several decades has affected several hundred people and mostly men. Other studies have linked sexual orientation with such environmental factors as exposure to hormones before birth and the presence of older brothers.
Biology of human behavior is an incredibly complex topic to study.
However, experts welcome received in the course of the study data, so a huge number of people in the world want to understand the biology of homosexuality. In the past this topic was banned todayfinally, blooms. Somehow, despite headlines in the media about the fact that gene's sexual orientation does not exist, this will not the last in search of an answer to all the questions about a person's sexual orientation. It is not excluded that the new study are the analysis of risky behavior or openness to new experiences, because the subjects had at least one same-sex experience are more likely to have reported bolam the number of sexual partners and Smoking marijuana and drinking alcohol.
As the authors of the study believe that they were able to see the connection between sexual orientation and sexual activity, however, admit that genes don't tell the orientation. Considering the complexity of this rather sensitive topic, many questions remain what and why. This means that in the future there will be more research. Wait.
Genes contribute to sexual orientation, not only Homo Sapiens but other animals on Earth.
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