Day 78 of 365
March 19
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Biology Epigenetics
Epigenetics studies heritable changes in gene expression without altering DNA sequences. Environmental factors like diet, stress, and toxins can add chemical marks to DNA or histones, turning genes on or off. These modifications can pass to offspring, meaning your experiences might affect your grandchildren's gene expression. This challenges pure genetic determinism and shows how environment and genes interact.
💡 Did you know?
Studies of Dutch famine survivors showed their grandchildren had different metabolisms - grandmother's starvation affected grandchildren's genes!
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