Which of the following best describes the difference between dominant and recessive alleles? A. Dominant alleles are weaker than recessive alleles.

B. Recessive alleles are always more common in a population than dominant alleles.

C. The trait of a dominant allele always shows up when the allele is present, while the trait of a recessive allele is hidden whenever the dominant allele is present.

D. The trait of a recessive allele always shows up when the allele is present, while the trait of a dominant allele is hidden whenever the recessive allele is present.