allelic exclusion


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allelic exclusion

[ə¦lē‚lik iks′klü·zhən]
(genetics)
Expression of a single immunoglobulin allele by a B lymphocyte.
References in periodicals archive ?
Each individual parasite expresses a single var gene at a time, whereas the remaining ~60 var genes found in its genome are maintained in a transcriptionally silent state, a phenomenon known as ""allelic exclusion"".