Post Date December, 03 2023
In a recently published paper, Dr. Anthony Bogart of Bullock University in Ontario, Canada, said that after comparing gay men who have more blood brothers with gay men who have more non-blood brothers, the former has a high probability of homosexuality even if raised in different families. Therefore, it is obviously unreasonable to just think that the family environment affects male sexual orientation.
The more brothers, the higher the probability of homosexuality
Some scientists in Canada have found that the more brothers a man has, the more likely he is to become gay, because his growth is affected by such an environment. The research began in 1997. Dr. Blanchard found that "gay men" are more likely to have multiple brothers than ordinary men and lesbians, and the more the number of brothers, the greater the probability of "homosexual".
Generally, for each elder brother, the probability of "homosexuality" increases by 1/3. Because of the low "base", many people still maintain heterosexual orientation. Similar research conclusions are not suitable for the relationship between lesbians and their sisters.
Congenital decision is more important than acquired influence
However, Dr. Bogart cannot reveal the relationship between brothers who have more blood relations and becoming homosexual. At present, the accepted theory is that the mother's immune system will respond to more male fetuses, that is, the stimulation of the fetus when it is in the mother's womb is more important to determine sexual orientation than the growth environment.
Because the mother has only X chromosome and no Y chromosome, it is easier to make a stronger immune response to the Y chromosome as an "alien". Some studies have shown that such immune response will increase with the number of pregnant male fetuses, and this response can affect the development of fetal brain sexual orientation.
Because the mother has an X chromosome and will not react similarly to the X chromosome that forms a female fetus, the sexual orientation of lesbians is not affected by this.
TIPS: Men are formed by the combination of father's Y chromosome and mother's X chromosome, while women are formed by the combination of father's X chromosome and mother's X chromosome.
