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单词 Null allele
释义

Null allele

英语百科

Null allele

A null allele is a mutant copy of a gene at a locus that completely lacks that gene's normal function. This can be the result of the complete absence of the gene product (protein, RNA) at the molecular level, or the expression of a non-functional gene product. At the phenotypic level, a null allele is indistinguishable from a deletion of the entire locus.

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