New research suggests that microRNAs play a crucial role in the advanced development of the brain, including in humans. Octopuses have fascinated scientists and the public with their remarkable intelligence, from using tools to engaging in creative play, problem-solving, and even escaping from aqua
The findings lend support to the theory that microRNAs play an essential role in the evolution of intelligent life.
“MicroRNAs are known as the ‘dark matter’ of the animal genome — they don’t make protein, but they regulate the expression of proteins,” Peterson said, referring to the hypothetical form of matter thought to constitute most of the universe. For the latest paper, Peterson’s group worked with the lab of co-corresponding author Nikolaus Rajewsky, professor of systems biology at MDC, which had a wealth ofdata on octopus species, particularly the common octopus . Peterson and co-author Peter Chabot, of Dartmouth’s Class of 2022, worked through raw data of microRNAs sequenced from octopus species and identified specific sequences that were either new or already found in these animals.
“Every time we’ve tested this hypothesis, we’ve found it very viable, and we’ve not been able to refute it yet. That’s what made this paper particularly exciting,” he said.
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