Question Detail
Question
Natural selection acts on an organism's: a. Dominant alleles b. Total genome c. Recessive alleles d. Phenotype
Correct Answer
Option D is the correct answer.
Detailed Explanation
Natural selection acts directly on an organism's phenotype, which is the set of observable traits (physical, behavioral, physiological) that interact with the environment. The genotype (genetic makeup) is indirectly acted upon as it influences the phenotype.
Hint
Selection 'sees' the organism's traits, not its genes directly.