Which statement is accurate about dominant alleles?

Question

They are expressed only when a recessive allele is not present

They are expressed whenever present

They result in the trait of shortness in pea plant

they are indicated by lowercase letters

Answer 1

The accurate statement about dominant alleles is:

They are expressed whenever present.

Dominant alleles are those that will manifest their trait in the phenotype when present in either a homozygous (two dominant alleles) or heterozygous (one dominant and one recessive allele) state.