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Why Some Primate Brains Are Smooth: New Research Uncovers the Cellular "Brakes" on Brain Growth
Most primates possess brains that are marvels of biological engineering, characterized by large volumes and intricate patterns of folds and grooves—a hallmark of evolutionary complexity. However, the common marmoset (Callithrix jacchus), a small South American monkey, presents a striking evolutionary exception. Its brain is remarkably smooth, lacking the extensive folding found in its larger-brained primate…
