Bee English Dictionary

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heterosis
  • n  (genetics) the tendency of a crossbred organism to have qualities superior to those of either parent
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heterosomata
  • n  flatfishes: halibut; sole; flounder; plaice; turbot; tonguefishes
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heterospory
  • n  the development of both microspores and megaspores
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heterostracan
  • n  extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian
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heterostraci
  • n  extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not clear
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heterotheca villosa
  • n  hairy perennial with yellow flower heads in branched clusters; found almost everywhere in dry places from Canada to west central and western United States; sometimes placed in genus Chrysopsis
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heterotrichales
  • n  yellow-green algae with simple or branching filaments; comprising the single family Tribonemaceae
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heterotroph
  • n  an organism that depends on complex organic substances for nutrition
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heterozygosity
  • n  the state of being heterozygous; having two different alleles of the same gene
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heterozygote
  • n  (genetics) an organism having two different alleles of a particular gene and so giving rise to varying offspring
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heuchera
  • n  genus of North American herbs with basal cordate or orbicular leaves and small panicled flowers
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heuchera americana
  • n  plant with basal leaves mottled with white and flowers in lax panicles on erect stems
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