nightlord

i was start researching towards genetics and homosexuality and was wondering that either these claims are scientifically valid or not !

please say why if its a false claim and non valid evidence

thanks

"sexually differentiated behaviors are organized during early life by an irreversible action of sex steroids"
http://www.morganclaypool.com/doi/abs/10.4199/C00064ED1V01Y201208DBR008?journalCode=dbr&

"A linkage between DNA markers on the X chromosome and male sexual orientation"
http://science.sciencemag.org/content/261/5119/321.abstract

"Homosexuality may be caused by chemical modifications to DNA"
http://www.sciencemag.org/news/2015/10/homosexuality-may-be-caused-chemical-modifications-dna

"Homosexual orientation in twins: A report on 61 pairs and three triplet sets
These findings are interpreted as supporting the argument for a biological basis in sexual orientation.
supporting the argument for a biological basis in sexual orientation"
http://link.springer.com/article/10.1007/BF01541765

"A difference in hypothalamic structure between heterosexual and homosexual men"
http://science.sciencemag.org/conte...ract?sid=a3ac9da2-15b4-4cd7-9a16-1f08a2fdd62f

“sexual attraction is influenced by genetic factors”, “heritable basis to male and female sexual orientation”, “found genetic influences on female sexual orientation as measured via attractions”
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0021982#pone-0021982-t001

“PET and MRI show differences in cerebral asymmetry and functional connectivity between homo- and heterosexual subjects”
http://www.pnas.org/content/105/27/9403.short

https://en.wikipedia.org/wiki/Xq28
http://science.sciencemag.org/content/285/5429/803.full
http://www.dailymail.co.uk/sciencet...-Scientists-predict-gay-70-cent-accuracy.html