Figure 6.

Organization and phylogeny of Gemin4/CG2941-like genes in Drosophilids. (A) Browser shot of D. melanogaster CG2941 paralogs, showing their relative location and exon-intron structure. Red dashes indicate regions targeted by short hairpin (sh)RNAs expressed from Gal4-inducible RNAi constructs, see text for details. (B) Drosophila phylogenetic tree showing gene name and number of respective Gemin4 (Gem4) orthologs within each lineage. Following their divergence from the obscura group (D. pseudoobscura and D. persimilis), potential duplications and deletions within the melanogaster group (D. sechellia, D. melanogaster, D. simulans, D. yakuba, and D. annanasae) are illustrated.