Скачать или смотреть “Identical Twins… But Not Identical Looking?”

Identical twins originate from the same fertilized egg, which splits into two embryos, meaning they share nearly identical DNA at birth. However, they may not always look exactly alike due to environmental factors and genetic differences that emerge over time. Differences in diet, physical activity, exposure to sunlight, or even illnesses can influence their appearance, such as weight, skin tone, or facial features. Additionally, as identical twins grow, their DNA can accumulate small mutations or changes, leading to slight genetic differences. These mutations, along with variations in gene expression, can further contribute to differences in their physical traits or health outcomes, showcasing the dynamic interplay between genetics and environment.

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