Natural selection acts directly on
- A
Genotypes (and indirectly on the phenotypes they produce)
- B
DNA sequences (and indirectly on the proteins they encode)
- Ccheck_circle
Phenotypes (and indirectly on the alleles producing them)
- D
Mutation rates (and indirectly on the alleles being generated)
Explanation
Selection sees individuals' traits; allele frequencies change as a consequence over generations.