Think identical twins are 100% the same? Think again! 🧬✨

Added: 2026-05-21

[00:00:00]Identical twins [music] are never biologically identical, even after a single fertilized egg splits in two.

[00:00:07]At [music] first, both embryos carry the same DNA sequence. But as cells divide, small [music] mutations can appear in one twin and not the other.

[00:00:18]Chemical tags called epigenetic markers attached [music] to DNA and change how genes are switched on or off.

[00:00:25]These [music] patterns shift in response to random cellular events and differences in the womb environment.

[00:00:32]Blood flow, nutrient delivery, and subtle positional differences [music] influence development from the earliest weeks.

[00:00:40]After birth, lifestyle, [music] infections, and aging continue to reshape gene expression.

[00:00:47]>> [music] >> Their genetic blueprint may match, but biology is continuously edited by [music] time and experience.

[00:00:56]>> [music]