Biology and sexual orientation
In identical twins, DNA is shared and overlaps perfectly. This proves that homosexuality can be inherited. And this, Hamer says, "could pave the way to a detailed neurobiological and genetic understanding of this fascinating aspect of human development. If you think you might be able to help us out, come right in. From a review of the research, published in the Journal of Sex Research: You will receive emails containing news content , updates and promotions from The New York Times.
- Identical Twin Studies Prove Homosexuality is Not Genetic
Identical twins share all of their genes, while fraternal twins only share 50 percent. Bouchard, now at Louisiana State University, housed a dozen lean young male twins in a dormitory and overfed them by 1, calories a day for three months. For catalog, samples, or further information, contact: Without the action, they would be indistinguishable from all other people. In fact, a priori , one would expect the role of a major gene in male homosexual orientation to be limited because of the strong selective pressures against such a gene. Signs You Need More Hydration. I presented a much broader treatment of possible causes of homosexuality elsewhere click HERE.
When shopping for groceries, check the labels for carrageenan, a thickening agent scientists are blaming for various gastrointestinal illnesses. Victorian scientist Francis Galton , a half-cousin of Charles Darwin, was one of the first people to recognize the value of twins for studying the heritability of traits. But under certain circumstances, they may be passed on to the next generation. The effect is to greatly increase, relative to pair-wise concordance values, the apparent genetic contribution to homosexuality in identical twin studies. Nonetheless, our data do not support the presence of a gene of large effect influencing sexual orientation at position Xq28