Figure 2: Genesis of the <i>Xenopus</i> Ancestor (IMAGE)

University of Tokyo

Figure 2: Genesis of the <i>Xenopus</i> Ancestor

Caption

Two ancestral species with nine pairs of chromosomes, S and L, mate to produce a hybrid S/L offspring with 18 chromosomes that do not pair. This sterile offspring undergoes whole genome duplication to produce a new fertile species with 18 pairs of chromosomes that is ancestral to all Xenopus species. For clarity, the process is rendered here with only one type of chromosome.

Credit

2016 Masanori Taira.

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