Why do snake lack limbs
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Studies show that snakes neither either from land burrowing animals nor lizards. It is unlikely that this was a primary cause for snakes losing their legs. A slender body without legs may have conferred additional advantage like ease of movement in water.
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Explanation:
About 150 million years ago, snakes roamed about on well-developed legs. Now researchers say a trio of mutations in a genetic switch are why those legs eventually disappeared. Taken together, the mutations in the enhancer of a gene known as “Sonic hedgehog” disrupt a genetic circuit that drives limb growth in snakes.
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