Figure 2.
A framework to investigate the genomes of domesticated cotton species. The progenitor genomes of allopolyploid cotton (including G. hirsutum, AD genome) are represented by diploid A-genome (G. arboreum) and D-genome (G. raimondii) lineages, which united ∼1–2 million years ago. Nucleotide sequence divergence between diploid A and D genomes (or their corresponding descendants in the allopolyploid) is ∼4% (Senchina et al. 2003; OG = Outgroup). Shown also are the number of ESTs derived from each of the three species used in the assembly.
