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
Different sequence of amino acid having similar structure of proteins is an example of 
Select and explain. 
A. Divergence, B. Convergence, C. Opportunistic, D. Incidental
B: Convergence
Answer: B: Convergence 
Explanation: Convergence is an evolutionary process by which distinctly unrelated organisms (protein) acquire morphologically similar traits (function), whereas divergence produces different traits (functions) in related same ancestor organisms (proteins).