Figure 2

Each of the numbered blocks represents one of the 32 linkage groups of the L. polyphemus genetic map, and is composed of four columns: Two bands of the triangular matrices in which the color scale indicates the fraction of samples showing recombination between pairs of markers; maternal recombination frequency is shown on the left, paternal on the right. A column labeled “ALG” indicates segments of significant (p  < 0.05 in Fisher’s Exact Test, after Bonferroni correction for multiple tests) conservation of gene content with ancestral bilaterian linage groups. The column labeled HOX shows the map positions and types of predicted homeobox transcription factor genes. The two color scales are for: recombination frequency between pairs of markers and log p-value for enrichment in gene content with ancestral linkage groups.