Heterogeneous nuclear rna
The hnRNA is the collective term for the unprocessed mRNA molecules in the nucleus. It is largely comprised of the pre-mRNA molecules that require extensive processing to become mature mRNA molecules. Although the hnRNA serve as precursor of mRNA, not all hnRNA become cytoplasmic mRNA.
See also: pre-RNA
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... been formed to investigate mutations that might have been caused by the nuclear weapons used in the Second World War: Many will be puzzled about ... genetic analysis (such as Marfan's syndrome) are now being shown to be heterogeneous; that is, associated with many different mutations... With ...
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