Metastable epialleles may sound like complex science, but they help explain why identical animals can still look and act differently. For years, scientists asked why two mice with identical DNA could ...
Epigenetics and differences in prenatal hormone exposure can help explain how two people can share the same DNA, but not necessarily share the same sexuality.
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Do identical twins have the same DNA?
It makes sense that identical twins would have the exact same DNA, right? Spoiler alert: Not always! Here's why. Identical twins (also called monozygotic or MZ twins) are conceived when a single sperm ...
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