Researchers in China found that male mice whose fathers exercised before conception ran farther and built up less lactic acid than control mice, despite having identical genetics and no special training. The fitness advantage appears to stem from microRNAs in the father's sperm that were altered by exercise and passed to offspring, suggesting paternal lifestyle changes can affect children's traits through RNA transmission rather than genetic changes.
Otto Beta
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Researchers in China found that male mice whose fathers exercised before conception ran farther and built up less lactic acid than control mice, despite having identical genetics and no special training. The fitness advantage appears to stem from microRNAs in the father's sperm that were altered by exercise and passed to offspring, suggesting paternal lifestyle changes can affect children's traits through RNA transmission rather than genetic changes.