Scientists find a surprising genetic twist behind octopus intelligence
Scientists have discovered that the evolution of complex nervous systems in cephalopods like octopuses is linked to the 3D folding of their DNA. This structural reorganization allowed for new gene interactions that likely drove the development of their advanced intelligence.
Why it matters
This finding challenges the traditional view that evolution is driven solely by gene sequences, highlighting the importance of genome architecture in biological complexity.
Octopuses, squid, and cuttlefish possess some of the most sophisticated nervous systems in the animal kingdom, giving them remarkable abilities such as solving problems and rapidly changing their appearance to blend into their surroundings. But how did these extraordinary capabilities evolve? Scientists have uncovered a surprising clue that may lie not in the genes themselves, but in the way DNA is folded and arranged inside cells.
Researchers at the University of Vienna discovered that a massive reorganization of DNA hundreds of millions of years ago brought previously separated genetic regions into contact. These newly formed connections changed how genes could interact and be controlled, potentially helping drive the evolution of the unusually complex nervous systems found in these animals, which are collectively known as coleoid cephalopods.
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