from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An organism that has different alleles at a particular gene locus on homologous chromosomes.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A diploid individual that has different alleles at one or more genetic loci.
  • n. A bacteriophage that has two different copies of its genetic material and so produces two types of offspring.

from The Century Dictionary and Cyclopedia

  • n. A zygote formed by the union of two unlike gametes.
  • n. In Mendelian phraseology, a hybrid animal or plant which combines the characters of two dissimilar parents; a mule-form.
  • Of or pertaining to a fertilized egg, or to origin from a fertilized egg, which is formed by the union of two opposite allelomorphic germ-cells: as, heterozygote characters.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (genetics) an organism having two different alleles of a particular gene and so giving rise to varying offspring


From hetero- +‎ zygote (Wiktionary)



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