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Homozygous means that the organism contains two copies of the same allele for a particular gene. Homozygous recessive means that the organism carries two recessive alleles. Such as with the example above, the white-flowered pea plant has two white alleles to make it be expressed that way.
An organism is said to be homozygous for a trait when both the alleles of a gene pair are the same. lt can be homozygous dominant (TT) or homozygous recessive (It). When the two alleles in a gene pair are not the same, for example, when the genotype is Tt, the organism is heterozygous, or hybrid for that trait.