Health / Medical Topics

    Heterozygosity

    Definition 1

    Having two different allelic forms of a gene, one inherited from each parent, on each of the two homologous chromosomes. (NCI Thesaurus)

    Definition 2

    Occurs when the two alleles at a particular gene locus are different. A heterozygous genotype may include one normal allele and one mutation, or two different mutations. The latter is called a compound heterozygote. (NCI Dictionary)




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