Fig. 2: Genome architecture of N. naja genome.

a, Circos plot of the reference genome assembly (NN01, a male adult (n = 1)) representing N. naja chromosomes (outermost track) from the Nana_v5 assembly, repeat content, gene density and GC content (%). Regions of the genome with GC content higher than average (40.46%) are shown in blue. Regions within the gene density of more than 10 genes are shown as red spikes, while those with 5 to 10 genes are indicated by yellow spikes. Green spikes represent regions with fewer than five genes. The average repeat content is indicated by the red line. All data were plotted in 100-kb windows. The female-specific W-linked scaffold obtained using NN05 DNA is shown on the right. b, Chromosome painting depicting synteny between Indian cobra and rattlesnake genomes. c, Dot-plots showing synteny of the Indian cobra genome with the prairie rattlesnake, chicken or green anole lizard genomes. d, Bar plot of the number of predicted genes and corresponding transcripts observed in Nana_v5. Dashed and solid lines denote average number of genes and transcripts detected in each chromosome along 100-Mb windows, respectively. MICs were combined into one group. Unp, unplaced scaffolds (n = 1,878) containing predicted genes.