If you inherit one dominant allele for dimples d and one recessive allele for no dimples what will be your phenotype?

Your phenotype will be: Dimples.

Explanation:

As shown in the question above, the "D" allele is a dominant allele and represents the "dimple" phenotype, while the "d" allele is a recessive allele and represents the "dimple" phenotype. If a person inherits these two alleles, he will present the pair "Dd" and be a heterozygote.

When an individual is heterozygous, it expresses the phenotype of the dominant allele, the recessive allele will only be expressed when the individual is homozygous recessive (dd). So if a person presents the "Dd" alleles that person has dimples.