Which statement is accurate about dominant alleles

Answer 1

A dominant allele is an allele that expresses its effect even when present in just one copy (heterozygous condition) in a genotype. This means that if an individual has one dominant allele and one recessive allele for a specific trait, the trait associated with the dominant allele will be the one that is visibly expressed in the phenotype. In contrast, a recessive allele will only express its effect if an individual has two copies of that allele (homozygous condition).