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Epigenetic Link to Neuropsychiatric Disorders Discovered
Dysfunction in dopamine signaling greatly changes the activity level of about 2,000 genes in the brain’s prefrontal cortex and may be an underlying cause of certain complex neuropsychiatric disorders such as schizophrenia….
…. this study shows that altered dopamine levels can modify gene activity through epigenetic mechanisms despite the absence of genetic mutations of the DNA.”
The DNA is NOT changed - the inheritance is epigenetic. NONE of the scientists said anything about DNA - just epigenetic inheritance. Which does NOT involve changes to DNA.
Epigenetics is about environment and the heritable effects can last several generations.
Epigenetic factors react to external stimuli and form bridges between the environment and the genetic information-harboring DNA.
Epigenetic mechanisms are implicated in the final interpretation of the encoded genetic information by regulating gene expression....
We can define the phenomena of epigenetics — chemical modifications of DNA or its associated proteins — as dynamic and potentially heritable changes in gene expression that persist even after the signal or event that initiated the change disappears.
ED. to add More...
Some epigenetic tags remain in place as genetic information passes from generation to generation, a process called epigenetic inheritance.
Epigenetic inheritance is an unconventional finding. It goes against the idea that inheritance happens only through the DNA code that passes from parent to offspring. It means that a parent's experiences, in the form of epigenetic tags, can be passed down to future generations.
As unconventional as it may be, there is little doubt that epigenetic inheritance is real. In fact, it explains some strange patterns of inheritance geneticists have been puzzling over for decades.
originally posted by: pl3bscheese
Okay, I think it's both. ....I think it would depend on the genetic code of each individual in said shared environmental situation