Mice don’t have tails on their backs, and their ribs don’t grow from lumbar vertebrae. And for good reason. Scientists have discovered the mechanism that determines the shape that many animals take — including humans, blue whales, and insects.
Mice don’t have tails on their backs, and their ribs don’t grow from lumbar vertebrae. And for good reason. Scientists have discovered the mechanism that determines the shape that many animals take — including humans, blue whales, and insects.