Question

If an individual has two dissimilar alleles for a trait, with regard to that trait he is said to
be:

Answer 1

If the phenotype associated with a given version of a gene is observed when an individual has only one copy, the allele is said to be autosomal dominant. The phenotype will be observed whether the individual has one copy of the allele (is heterozygous) or has two copies of the allele (is homozygous).