How common is different hand dominance in twins
Posted on Sat 16 August 2025 in Science
Reader Question
"Is it common for one twin to be left-handed and the other right-handed?"
It’s not uncommon for one twin to be left-handed and the other right-handed. According to a 2012 study, about 25% of monozygotic (identical) twins are mirror images of each other in appearance and other physical traits, including hand preference. This means that if one twin is left-handed, the other may be right-handed. Such twins can also show other mirrored features, such as birthmarks on opposite sides of the body. The phenomenon isn’t unique to twins, but it is more common among them.
Sources:
- https://dzen.ru/a/Y3in7ON6nRRMV-VT
- https://weekend.rambler.ru/people/50787218-8-neveroyatnyh-faktov-o-bliznetsah-kotorye-vy-ne-znali/
- https://adme.media/articles/7-tipov-bliznecov-dokazyvayuschih-chto-matushka-priroda-gorazda-na-vydumki-2397515/
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