Dominant trait is a term used in genetics for the prevailing trait, which will override a recessive trait. As a result, dominant traits are more common then recessive ones. An example of a dominant trait is brown eyes. You can find the probability of a dominant triat appearing in a couple's children through a Punnett square, in which a dominant trait is expressed with a capital letter, while a recessive trait with a lowercase letter.

A dominant trait will be expressed as long as the organism is not homozygous recessive, meaning that both the organism's alleles are for the recessive trait. If the organism is homozygous dominant (both alleles are for the dominant trait) or heterozygous (one allele is for the recessive trait and the other is for the dominant trait), the dominant trait will be expressed.

Therefore, if one parent has genes for a dominant trait and the other parent has genes for a recessive trait, their children will have the characteristics of the first parent.

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