Abstract
The nucleotide sequence of the 16S–23S spacer from a ribosomal RNA operon of Zea mays chloroplast DNA has been determined. It contains two tRNA genes, coding for tRNA lle (AU C U) and tRNA Ala(GC G A), which are split by intervening sequences of 949 and 806 base pairs, respectively. Homology between the two introns suggests that they have a common origin.
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