試題詳解

6. What is a dominant allele?
(A) An allele that has no noticeable affect on an organism's phenotype
(B) An allele that totally beats up on a recessive allele
(C) An allele that will only have an affect on phenotype in a haploid organism； otherwise its presence will be masked
(D) An allele that is very prevalent in a population
(E) In a heterozygous individual, the allele that determine's the phenotype