Two Large Families of Chemoreceptor Genes in the NematodesCaenorhabditis elegans and Caenorhabditis briggsae Reveal Extensive Gene Duplication, Diversification, Movement, and Intron Loss

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Figure 4.
Figure 4.

Reconstructions of the ancestral intron placements for the strand stl families of chemoreceptor genes. Exons are shown as open numbered boxes of roughly accurate length, whereas introns are shown as lettered lines. The phases of the introns are shown above them: (0) Between codons; (1) between the first and second bases of a codon; (2) between the second and third bases of a codon. (Arrowhead) The position of insertion of intron i.

This Article

  1. Genome Res. 8: 449-463

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