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. Author manuscript; available in PMC: 2009 Dec 1.
Published in final edited form as: J Mol Evol. 2008 Dec;67(6):653–669. doi: 10.1007/s00239-008-9177-2

FIGURE 2.

FIGURE 2

Proposed scenario for intron losses within the N-6Ig-coding region.

Schematic diagram of the different exons comprising the N-6Ig-coding region of the projectin genes, together with a possible scenario to account for intron losses derived from the basal A. pisum gene. Numbers above each exon indicate the encoded Ig domain. FRAM is a unique conserved sequence found between Ig9 and Ig10. * indicates conserved splice sites from the basal A. pisum gene. Note: introns are not drawn to scale.