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Example sentences for: erecta
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In an accompanying paper, C. Bergman et al . [ 65] surveyed sequence conservation in approximately 0.5 Mb of the D. melanogaster genome containing 81 genes using comparative data from four Drosophila species ( D. erecta, D. pseudoobscura, D. willistoni and D. littoralis) . Their comparison to our D. melanogaster annotations detected no genes conserved in other species that were missed in Release 3 [ 65].
Supplementary Table 2, details the codon usage in D. melanogaster compared with D. erecta, D. pseudoobscura, D. willistoni , and D. littoralis .
Genomic sequences for six of the nine genes which fail the K a /K s test at the gene level were sampled in more divergent species: four of these six genes could be identified in more divergent species ( Lmpt, CG10887, CG14292 , and CG4468 ), whereas two could not ( CG12378 and CG14294 ), indicating that genes conserved in divergent species can fail gene-level K a /K s tests in comparisons among closely related species like D. erecta . Of the four genes identified only in D. melanogaster and D. erecta and not in more distantly related species, two pass CG12133 and CG13029 ) and two fail ( CG12378 and CG14294 ) the gene-level K a /K s test.
In non-melanogaster species, we predict 495 coding exons (148 in D. erecta , 133 in D. pseudoobscura , 111 in D. willistoni , 103 in D. littoralis ) that form orthologous clusters with 264 D. melanogaster coding exons.
The majority of exons that fail the K a /K s test still have K a /K s ratios less than 1; only six non-significant pairwise exon comparisons (one in D. erecta , one in D. pseudoobscura , two in D. willistoni , and two in D. littoralis ) have K a /K s ratios greater than 1 (Figure 3).
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