MiroslavBulldosex
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- Although autosomal DNA is inherited equally from each parent, a few genetic diseases seem to be worse when inherited from one's father (e.g. Huntingdon's disease), because mutations occur or repeat themselves at a higher rate in men, and increase with the father's age. This is also why older fathers (over 40 years old) have higher chances of having children suffering from schizophrenia, depression or autism.
- Rather than inheriting a homosexual gene, studies have observed that gay men tended to have several older brothers (including abortions and miscarriages). The reason is that the mother's body accumulates antibodies against genes responsible for the masculinisation of the foetus' brain at each pregnancy with a boy. The risk of male homosexuality therefore increases with the number of boy carried by a mother before. This does not apply to girls.