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heterozygous

heterozygous

1 9.9
Having two different versions of a gene, one from each parent
  • adjective
  • /ˌhɛtəroʊˈzaɪɡəs/
  • Specialized
: heterocigoto
  • His genetic report revealed that he was heterozygous for the BRCA1 gene mutation.
  • heterozygous mutation
  • heterozygous individuals
  • heterozygous advantage

Examples

  • We identified a heterozygous mutation in the MCP gene in one family.

    Academic text (2003)
  • Each person was classified as a homozygous secretor (SeSe), a heterozygous secretor (Sese428), or a nonsecretor (se428se428).

    Academic text (2012)
  • OK, But again, these are heterozygous animals.

  • Such testing allows breeders to detect heterozygous plants and eliminate them from the breeding program.

    Academic text (2003)
  • Heterozygous plants won't breed true, and some of their offspring will be susceptible to virus attack.

    Academic text (2003)
  • Findings: We identified a heterozygous mutation in MCP, a surface-bound complement regulator, in two patients with a familial history of HUS.

    Academic text (2003)
  • The researchers tested the organism and found it to be heterozygous for a specific trait.

  • In plants, a heterozygous genotype can lead to variations in physical characteristics.

Antonyms

homozygous
  • Specialized
1 9.7

Having two identical copies of a gene in a cell or organism

How Heterozygous

heterozygous
  • Specialized
1 9.9
homozygous
  • Specialized
1 9.7

Surface Forms

heterozygous positive

Morphology

heterozygous = hetero + zygous

Formed from the productive prefix 'hetero-' plus the combining form 'zygous'; the formation is regular but relies on technical biological terminology that many learners may not know.

Etymology

The word heterozygous comes from Greek parts hetero- meaning 'different' and zygous from a word for 'yoked' or 'joined', the same root as zygote. So heterozygous literally means 'different things joined', which helps you remember it describes a living thing that has two different versions of the same gene.