Answer: Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive. hope this helps
When a dominant trait is present it will always show. For example long tails are dominant. (Ll and LL will both result in long tails). For recessive traits you need two of them for the trait to show. For example short tails are recessive. (You HAVE to get ll for the short tail trait to show in the offspring.
