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A new study focusing on insulin signaling uncovered surprising genetic diversity across reptiles, birds and mammals. Insulin signaling is a critical biological process that governs the rate at which cells grow and divide and ultimately regulates aging. Scientists previously assumed the process remained much the same throughout the animal kingdom.
But the new research shows that the genetic pathways in reptiles evolved to include protein forms not observed in mammals, a finding that suggests these proteins carry out new or additional functions in reptiles.Image credit: iStock
