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Definition of allele noun from the Oxford Advanced Learner's Dictionary

allele

noun
 
/əˈliːl/
 
/əˈliːl/
 (biology)
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  1. one of two or more possible forms of a gene that are found at the same place on a chromosomeTopics Biologyc2
    Word Origin1930s: from German Allel, abbreviation of allelomorph (from Greek allēl- ‘one another’ + morphē ‘form’).
See allele in the Oxford Advanced American DictionarySee allele in the Oxford Learner's Dictionary of Academic English
Check pronunciation: allele

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trait
noun
 
 
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