What genetic similarities do doppelgangers share beyond physical appearance?

Research led by Manel Estella from the Josep Carreras Leukemia Research Institute found that lookalikes share significant genetic similarities. After studying 32 sets of doubles using facial recognition software, researchers discovered that 16 pairs showed uncanny resemblance similar to identical twins. DNA tests revealed these unrelated lookalikes had similar genetic sequences, making them like 'virtual twins.' Beyond appearance, the research investigated how genomics, epigenomics, and microbiomics contribute to human resemblance, with potential implications for understanding personality characteristics and other anthropometric properties.