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Homozygous

Having two identical alleles at a locus. Homozygous for an alternate allele means both copies carry the variant.

Example in a sentence

He was homozygous for the alternate allele (1/1) and had the associated phenotype.

Key facts

  • Same allele on both chromosomes; 0/0 or 1/1.
  • Recessive traits often require homozygous alternate.

Category: Genetics & Variation

Related terms

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Homozygous | Bioinformatics Glossary | GENOS.bio