Which of the Following Statements Are True of Multiple Allele

Multiple Choice

Which of the following statements are true of multiple allele inheritance (Select all that apply) ?

A) More than two alleles for the trait exist,but an individual will have only two of them.
B) At least one of the alleles will be dominant over another.
C) A child may have a phenotype that is different from that of both parents.
D) A child may have a genotype that is different from that of both parents.
E) The human ABO blood group has three alleles and four possible blood types.
F) In the ABO group,the recessive phenotype is the most frequent in the human population.