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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Trends Ecol Evol. 2010 Nov 18;26(1):38–44. doi: 10.1016/j.tree.2010.10.006

Figure 3.

Figure 3

Nitrogen conservation in plants illustrated by lower average N content per nucleotide and shorter sequence length (exons) of UTRs in plants vs animals. The mean and standard errors are plotted per organisms for a set of invertebrate, mammal, and plant species. Sequence data were obtained from the UTResource and species with information from at least 50 genes were selected; number of species for 3’ and 5’ UTRs were as follows: mammals (13 and 16), invertebrates (61 and 43), and plants (81 and 68).