speciation adaptation natural selection genetic mutation
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Parakeets are birds whose basic plumage color is green. However, parakeets exhibit a wide range of color both in the wild and in captivity. Which process is the source of the wide color variation observed in parakeet populations?
Possibilities:
- speciation
- adaptation
- natural selection
- genetic mutation

genetic mutation