Chitin is a long-chain polymer derived from glucose. It strengthens cell walls of fungi and the outer covering (exoskeleton) of arthropods (including crabs, shrimps, and insects). The presence of chitin in these groups is likely due to ________.

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Quizplus · Accepted Answer

Chitin is present in fungi and arthropods, which are not closely related phylogenetically. This suggests it evolved independently in these groups through convergent evolution.

Chitin Is a Long-Chain Polymer Derived from Glucose