allele


al·lele

noun \ə-ˈlēl\

Definition of ALLELE

1
:  any of the alternative forms of a gene that may occur at a given locus
2
:  either of a pair of alternative Mendelian characters (as smooth and wrinkled seed in the pea)
al·le·lic \-ˈlē-lik, -ˈle-\ adjective
al·lel·ism \-ˈlē-ˌli-zəm, -ˈle-\ noun

Origin of ALLELE

German Allel, short for Allelomorph
First Known Use: 1928

al·lele

noun \ə-ˈlē(ə)l\   (Medical Dictionary)

Medical Definition of ALLELE

1
: any of the alternative forms of a gene that may occur at a given locus
2
: either of a pair of alternative Mendelian characters (as ability versus inability to taste the chemical phenylthiocarbamide)
al·le·lic \-ˈlē-lik, -ˈlel-ik\ adjective
al·lel·ism \-ˈlē(ə)l-ˌiz-əm, -ˈlel-ˌiz-\ noun

allele

noun    (Concise Encyclopedia)

Any one of two or more alternative forms of a gene that may occur alternatively at a given site on a chromosome. Alleles may occur in pairs, or there may be multiple alleles affecting the expression of a particular trait. If paired alleles are the same, the organism is said to be homozygous for that trait; if they are different, the organism is heterozygous. A dominant allele will override the traits of a recessive allele in a heterozygous pairing (see dominance and recessiveness). In some traits, alleles may be codominant (i.e., neither acts as dominant or recessive). An individual cannot possess more than two alleles for a given trait. All genetic traits are the result of the interactions of alleles.

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