Changes

A trait that is homozygous is one that is only expressed in an organism when it contains the same copy of two alleles. [[Recessive gene]]s are expressed in the phenotype of an organism only in individuals that are homozygous for that trait.

A [[trait]] that is '''homozygous''' is one that is only expressed in an organism when it contains the same copy of two [[allele]]s. [[Recessive gene]]s are expressed in the [[phenotype]] of an organism only in individuals that are homozygous for that trait. The opposite of homozygous is [[heterozygous]].