this post was submitted on 21 Dec 2023
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[–] reddig33@lemmy.world 9 points 11 months ago (2 children)

Genetic difference. Just like people who can raise one eyebrow. Not all of us have the same muscle control. Likely a leftover from days where we could point our ears towards a sound like small-eared dogs can.

[–] agent_flounder@lemmy.world 4 points 11 months ago

Wait until y'all hear about ear rumbling and eye wiggling...

[–] tal@lemmy.today 1 points 11 months ago* (last edited 11 months ago)

Just like people who can raise one eyebrow.

https://en.wikipedia.org/wiki/Tongue_rolling

Tongue rolling is the ability to roll the lateral edges of the tongue upwards into a tube. The tongue's intrinsic muscles allow some people to form their tongues into specific shapes. Rolling the tongue into a tube shape is often described as a dominant trait with simple Mendelian inheritance, and it is commonly referenced in introductory and genetic biology courses, although there is some disagreement.[1]