Have you ever wondered why people are attracted to each other? Why some people are attracted to the opposite sex and others aren’t?
It’s all biological. In 2014, it was confirmed by research that same-sex oriented men had a connection a specific chromosomal region, Sort of like the findings posted back in 1990 bringing about the “gay gene.” Evidence points towards the existence of a complex interaction between genes and the environment making this sexual orientation heritable. Definitely not one’s choice. The Academy Of Science South Africa has released these findings; this was done by a panel to evaluate all research done on this subject in the past fifty years. This was done because of the large number of laws coming about in Africa that discriminate against people attracted to others of the same sex.
Existing research
After looking over several different scientific studies with many different focusing areas they have concluded that Homosexuality is both caused by heritable and environmental components combined. It has been shown in studies that homosexual men often have more older brothers than heterosexual men. Homosexual men are also more likely to have brothers and sisters who are homosexual as well. It has also been shown that lesbian women have more lesbian sisters than heterosexual women.
Identical twins inherit the same genes, so studies done on them is imperative in proving this knowledge to be true. Studies show that homosexuality is more common in identical twins than non-identical twins, Thus proving that it can be inherited.
Important factors
Epigenetics relate to the influence of environmental factors on genes either while in the uterus or after the birth of the baby. Epi-marks are usually erased from generation to generation. Usually, all females have two X-chromosomes one of which is inactive, switched off. This is done in a random manner. It has been noticed that in women who have homosexual sons that there is a skewing inactivity of these X-chromosomes. The same chromosome is inactive in these mothers. That suggests that this may be part of what determines one’s sexual orientation.
Environmental factors also play a key role in this, the same way they do with birth defects. They can have an impact on DNA, things like drugs, chemicals, toxins. They can leave their own epi-marks.
Evolution
Same-sex relationships are said to create a ‘Darwinian paradox’ because they don’t contribute to the human reproduction. This posits that they would be selected against because they don’t contribute to the continuation of the species. If this were correct the same-sex couples would decrease and disappear with time but they have not.
It has been found that for future study will show the sexual orientation is biologically determined. There is nothing we can do to change it.
sources:
http://news.sciencemag.org/biology/2014/11/study-gay-brothers-may-confirm-x-chromosome-link-homosexuality
http://www.assaf.co.za/wp-content/uploads/2015/06/8-June-Diversity-in-human-sexuality1.pdf
http://www.whatisepigenetics.com/fundamentals/
http://gaystudies.genetics.ucla.edu/UCLA%20Twin%20Sexual%20Orientation%20Study/Read%20More_files/Extreme%20Skewing%20Bocklandt%20et%20al.pdf
- Organic Health
