Origin of the Hand

Humans evolved from materials that arrived on Earth, cells, and fish.
Recently, it has been discovered that the hand (forelimb) originated from fish fins.

New research has further revealed the involvement of the HoxB cluster gene in this evolution.

https://elifesciences.org/articles/105889

reference

https://www.nature.com/articles/s41586-023-06100-w

https://www.natureasia.com/ja-jp/ndigest/v19/n10/100年以上謎に包まれていた4億年前の脊椎動物の正体/116749