Question

Suborder Pleocyemata includes both crabs and lobsters. Both possess a tail but in crabs this structure is very small and not used. This structure cannot be considered as an example of

• A. Convergent evolution
• B. Vestigial structure
• C. Divergent evolution
• D. Genetic fitness
• E. Homologous structure

Answer 1

Answer: (A)

Convergent evolution

For convergent evolution to occur, the organisms should not be closely related. The organisms evolve similar traits independent of each other. In this case, both have developed a tail but they belong to the same suborder. Hence, it cannot be considered as convergent evolution.