the physical map indicates that duckweed cpdna contains two inverted repeat regions ( 18 md ) separated by two single copy regions with a size of 19 md and 67 md , respectively.by hybridization with spinach chloroplast rrnas it could be shown that each of the two repeat units contains one set of rrna genes in the order : 16s rrna gene - spacer - 23s rrna gene - 5s rrna gene.a spinach chloroplast mrna preparation ( 14s rna ) , which is predominantly translated into a 32 kilodalton ( kd ) protein [ 9 ] , hybridized strongly to a dna fragment in the large single copy region , immediately outside one of the inverted repeats .
C0035701
rrnas
C0035899
rrna genes