Analogous organs arise due to:

Key Points

Option 1: Divergent evolution

• Divergent evolution is a process in which species having a common ancestor evolved into different species over a period.
• They form homologous structures.
• For example, the bones of forelimbs in men and whales are homologous structures as they are structurally similar but functionally different.

Option 2: Artificial selection

• Artificial Selection is the process by which humans choose organisms with valuable phenotypic traits for breeding.

Option 3: Genetic Drift

• Genetic drift is the change in allele frequencies that occurs by chance. It occurs in a small population. 

Option 4: Convergent evolution

• Convergent evolution is a process in which some distantly related organisms evolve with similar features over some time.
• It leads to the formation of analogous structures.
• For example, the wings of butterflies and birds are analogous structures as they are structurally different but functionally similar.

So, the correct answer is option 4.