Fig. 1: Characteristics of baobab genomes.
From: Chromosome-level baobab genome illuminates its evolutionary trajectory and environmental adaptation
a GenomeScope estimation of A. digitata genome size using 19-mer sequence counts and ploidy set to 4, the K-mer frequency depicts a unimodal pattern suggesting a diploid homozygous genome with a size of 659 Mb. b Assembly graph of Ad77271a suggests that there are both stretches of heterozygosity as well as transposable elements (TEs) that impact genome assembly. c Hi-C contact map of A. digitata (Ad77271a) shows the 42 chromosomes and the shared centromere sequence across the chromosomes. The bottom right corner was unscaffolded centromere sequence. d Two-dimensional histogram depicts tetraploid based on minor allele frequency coverage. For diploid organisms, a single peak is expected. However, for tetraploid organisms, the histogram should exhibit two peaks, approximately located at 0.25 and 0.5, respectively. e Structural rearrangements and synteny between A. digitata (Ad77271a, Ad77271b, AdKB, and AdOHT) and A. za (Aza135). A translocation on chromosome 23 distinguishes A. digitata from A. za species. Gray, orange, green, and blue-ribbon colors represent syntenic, inversion, translocation, and duplication structural variations, respectively. The tracks above the structural variant ribbons in the panel depict the distribution of genes and repeat sequences along chromosome 23.
