Answer:
Chemical tags reveal interplay of genes, environment in autism.
Explanation:
It just shows what type of DNA a person has which means the letters A, T, G and C, which represent different DNA bases, spell out the blueprint for the human body. But they aren’t the only ones that matter.
CH3 is the chemical formula for a methyl group — a carbon atom studded with three hydrogens. Methyl groups can attach to DNA and affect whether the DNA is recognized by the cell’s machinery. Different exposures and experiences — anything from air pollution exposure to stress — can make DNA more or less likely to gain or lose methyl tags.
