Definition of heterozygous in English:

heterozygous

adjective

Genetics
  • See heterozygote

    • ‘Organisms heterozygous for a loss-of-function allele often have no discernible phenotype.’
    • ‘When heterozygous with a wild-type chromosome, the eyes are pale, with few if any spots.’
    • ‘Genomic DNA was isolated from flies that were heterozygous for the lethal allele.’
    • ‘In this latter group, no such asymmetry occurs because the sex chromosomes are equally heterozygous.’
    • ‘None of the 34 wild pupae tested was either homozygous or heterozygous for the I allele.’

Pronunciation

heterozygous

/ˌhɛt(ə)rə(ʊ)ˈzʌɪɡəs/