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Allen
Allen key
Allen screw
Allen wrench
allene
Allentown
allergen
allergic
allergic alveolitis
allergic dermatitis
allergic purpura
allergic rhinitis
allergist
allergy
allethrin
alleviate
alley (1)
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allele

al·lele [ ə ll ] (plural al·leles)


noun 
Definition:
 
form of gene: one of two or more alternative forms of a gene, occupying the same position locus on paired chromosomes and controlling the same inherited characteristic

[Mid-20th century. < German Allel, shortening of Allelomorph "allelomorph"]

al·le·lic adjective
al·le·lism noun
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