Dimpled chin and free earlobes are two dominant characters in humans. smooth chin and attached earlobes are recessive characters. a person has the genotype ddff. which of the following statements is correct with respect to this genotype? the person is heterozygous for the first character and homozygous for the second./ the person is homozygous for the first character and heterozygous for the second. /the person is homozygous for both characters.