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AlanGiulio
Prof. Robin Lovell-Badge FMedSci FRS, Group Leader at The Francis Crick Institute, said:
“The new data on genetic associations they report here does not show sufficient statistical significance to make any formal link between a gene or chromosome region and being gay or heterosexual. However, their data does tend to reinforce some previous findings of associations, which were also relatively weak, with a region of Chromosome 8 and the X chromosome. Regions of chromosome 13 and 14 also appear from the new work to be worth paying attention to in future studies. The authors also suggest some candidate genes – but this is really just speculation and it is impossible to tell how any particular gene might influence any aspect of behaviour without substantially more work – and this can be very challenging in humans where studying gene function in a way that controls for variations in genetic background and environment is very difficult. Moreover, even if a gene variant does show some correlation with sexual orientation, this does not mean that the gene is in any way responsible for being gay – it just means it has some association with a trait that is more likely to found in the relatively few people involved as subjects in the study. This could be better social awareness or being brave enough to acknowledge that they are in a minority.”
Il lavoro rappresenta un progresso.
Prof. Gil McVean FRS FMedSci, Professor of Statistical Genetics at the University of Oxford, said:
“There is limited evidence from previous work for genetic influences on sexual preferences. This work confirms that if there are genetic effects, they are extremely weak and scattered across the whole genome. So there is certainly no single gene for influencing sexual preference – rather (like height, mathematical ability or risk of diabetes), many small effects that, even together, play only a weak role in shaping sexual preference.
“The specific biological hypothesis put forward in this paper does not have anything more than highly tenuous / circumstantial evidence. Rather, as above, sexuality is likely influenced by many different factors, including environment, experience and (likely) some aspects of innate biological variation
Infatti io non cito mai Alan Sander da solo. Il punto è che c'è un dato, che va messo assieme a tutti gli altri, A. Camperio Ciani, ma anche gli studi di neurofisiologia (Balthazart, Jacques. Brain Development and Sexual Orientation. Vol. 8. Morgan & Claypool Publishers, 2012. ) o di antropologia o ancora psicologia. Una spiegazione corretta è quella che è compatibile con tutti i fatti, non con l'ideologia preferita.