You may have inherited your mother’s eyes, but, genetically speaking, you use more DNA passed down from your father. That’s the conclusion of a study on mice that researchers say likely applies to all mammals.⁠ ⁠ Researchers in 2015 reported that thousands of mouse genes show parent-specific effects and that, on balance, the scales are tipped in favor of dads. Studying whether this imbalance exists in humans could give scientists insights into the causes of inherited conditions like diabetes and heart disease.⁠ ⁠ _____⁠ ⁠ Researchers found that most genes showed parent-of-origin effects in their levels of expression and that paternal genes consistently won out. For up to 60 percent of the mouse’s genes, the copy from dad was more active than the copy from mom. This imbalance resulted in mice babies whose brains were significantly more like dad’s, genetically speaking.⁠ ⁠ The researchers believe the same is likely true in all mammals. “We now know that mammals express more genetic varia...