Dominant and Recessive genes?

An allele is one of two or more versions of a gene. An individual inherits two alleles for each gene, one from each parent. If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous.

A recessive allele only shows if the individual has two copies of the recessive allele. For example, the allele for blue eyes is recessive. You need two copies of the allele to have blue eyes.

A dominant allele always shows, even if the individual only has one copy of the allele. For example, the allele for brown eyes is dominant. You only need one copy of the allele to have brown eyes (and two copies will still give you brown eyes).

A trait is a characteristic of a person. Both parents contribute traits to the baby. When two particular traits collide, such as brown eyes from one parent, and blue eyes from the other parent, then one will dominate the other. This means the baby will have only the eye color of one of the parents. It is obviously not possible to have the eye color of both. The observed trait is the dominant trait. The trait that was suppressed (not visible) becomes a recessive trait. It's still there, in the genes of the baby, but it is not observable in the baby.