Science / Genetics / Exons: Portion of a gene included in the transcript of a gene and survives processing of the rna in the cell nucleus to become part of a spliced messenger of a structural rna in the cell cytoplasm: an exon specifies the amino acid sequence of a portion of the complete polypeptide.
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Science / Genetics / Introns: The dna base sequences interrupting the protein- coding sequences of a gene: these sequences are transcribed into rna but are cut out of the message before it is translated into protein. Compare exons MORE
Science / Genetics / Alternative Splicing: Different ways of combining a gene's exons to make variants of the complete protein MORE