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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.
Homozygous and Heterozygous. If an organism has two copies of the same allele, for example AA or aa, it is homozygous for that trait. If the organism has one copy of two different alleles, for example Aa, it is heterozygous.Keep in mind that an organism can't simply be 'homozygous,' period.or example, the allele that gives rise to albinism is recessive, and the allele for normal pigment production is dominant. That means that a heterozygous individual with the genotype Aa, who has one copy of the normal allele and one copy of the albinism allele, would not be an albino.