Snakes,which Lack Limbs,evolved from Vertebrates That Had Legs

question 38

Multiple Choice

Snakes,which lack limbs,evolved from vertebrates that had legs.The limbs of snakes disappeared by _______ and the backbones of snakes are a _______.

• A) convergent evolution;synapomorphy
• B) an evolutionary reversal;synapomorphy
• C) convergent evolution;homoplastic trait
• D) an evolutionary reversal;homoplastic trait
• E) an evolutionary reversal;heteroplastic trait

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