What evolves during natural selection?
A. the phenotypes of individual organism
B. entire species
C. inactivated genes
D. the proportion of different traits in a population
A. the phenotypes of individual organisms
During natural selection, certain traits that are advantageous in a particular environment are more likely to be passed on to future generations, leading to changes in the phenotypes of individual organisms over time. This process ultimately affects the proportion of different traits in a population and can potentially result in the evolution of entire species.