This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'A different sequence of amino acids having a similar structure of proteins is an example of \nSelect and explain. \nA. Divergence, B. Convergence, C. Opportunistic, D. Incidental', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Divergence and convergence are two evolutionary processes by which organisms become adapted to their environments.\nConvergence\xa0has been defined as the acquisition of morphologically similar traits between distinctly unrelated\norganisms.\nConvergence occurs at every level of biological organization.\n\nFunctional Convergence\n\nThis refers to molecules that serve the same function but have no sequence or structural similarity and carry out their\xa0function by entirely different mechanisms.\n\nMechanistic convergence\n\nMechanistic convergence occurs when the sequence and structure of molecules are very different but the mechanisms\xa0by which they act are similar.\n\nStructural Convergence\n\nThis refers to molecules with very different amino acid sequences that can assume similar structural motifs, which\xa0may carry out similar functions.\n\nSequence Convergence\n\nIn sequence convergence, one or more critical amino acids or an amino acid sequence of two proteins come to resemble each other due to natural selection. (In protein evolution, sequence divergence, rather than sequence convergence is the rule.)', 'role': 'assistant'}]