1. having two identical alleles of a particular gene or genes
Usage: genetics; biology

Examples

• The plant was homozygous for the trait that produces red flowers.
• Homozygous individuals express the same version of a gene from both parents.
• The lab tested whether the mice were homozygous or heterozygous for the mutation.
• Children of two homozygous parents will also be homozygous for that trait.
• The geneticist identified several homozygous recessive alleles in the population.
• Homozygous dominant organisms display the dominant phenotype.