Старая дискуссия: что сильнее влияет на человека - наследственность или воспитание?
Новейшая теория - они "работают" вместе.
Определенная генетическая предрасположенность, например, к депрессии "включается" только если к этому располагают жизненные обстоятельства - безработица, развод или смерть близкого человека.
Nature v nurture? Please don't ask
The serotonin transporter gene, 5HTT, also has two alleles, and is known to be involved in mood. Moffitt and Caspi found that people with one allele were 2.5 times more likely to develop clinical depression than those with the other - but, again, only under particular circumstances. The risk applies only to people who also experience stressful life events such as unemployment, divorce or bereavement. When their environments are happy, their genotypes made no difference.
These results show the sterility of the old nature-nurture debate. Nature works through nurture, and nurture through nature, to shape our personalities, aptitudes, health and behaviour. The question should not be which is the dominant influence, but how they fit together.
http://www.timesonline.co.uk/tol/news/uk/science/article5986239.ece