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POS-KUPANG.COM – Although old in human cooking, the new rabbit became a pet in the 19th century. But in this short period of time, human intervention has changed the rabbit's brain.
Charles Darwin even wrote that no animal is more easily tamed than a young wild rabbit. On the contrary, there are no more benign animals of young domestic rabbits.
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To find out what causes this inequality, eight wild rabbits and eight domestic rabbits grow in the same neighborhood.
Dr. Miguel Carneiro of the University of Porto, Portugal, who led the study, said in a previous study, a genetic inequality between wild and domestic rabbits, "Now we decided to use high-resolution MRS to see if these genetic changes are causing changes in brain morphology (rabbits), "he said, quoted by The Independent on Wednesday (27/6/2018).
Published in the journal PNAS, experts get something interesting. Domestic rabbits do not only have smaller brains than wild rabbits, but there are already narrowed and already exaggerated parts.
The amygdala or part of the brain useful for fear, for example, shrinks to the brain of domestic rabbits. Meanwhile, the medial prefrontal cortex that controls the response to feeling the fear grows.
Domestic rabbits were encountered with less white matter to process information than wild rabbits. This shows that society's pet rabbits' fears of humans must come from the brain.
The experts themselves were not surprised by this result. They say that throughout human history, we certainly encourage the evolution of animals by choosing non-aggressive and benign individuals.
This research also became the first comprehensive study linking domestication to genetic changes affecting brain shape.
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