Which statement is accurate about dominant alleles?

Question

They are expressed whenever present

They result in the trait of shortness in pea plants

they are expressed only when a recessive alleles is not present

They are indicated by lowercase letters

Answer 1

The accurate statement about dominant alleles is:

They are expressed whenever present.

Dominant alleles will mask the effect of recessive alleles when both are present in an organism. In contrast, recessive alleles are only expressed when two copies are present and no dominant allele is available.