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flag Modern humans have a unique finger length ratio linked to brain evolution, researchers say.

flag A new study suggests a link between finger length ratios and human brain evolution, indicating that the relative length of the index to ring finger may reflect changes in brain development over time. flag Researchers analyzed skeletal remains and found that modern humans have a distinct ratio compared to ancient hominins, potentially tied to prenatal hormone exposure and cognitive evolution. flag The findings offer a possible biological marker for understanding how human brains evolved.

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