Figure 2
From: Tracing whale myoglobin evolution by resurrecting ancient proteins
Evolutionary distance and posterior probability distribution of ancestral Mbs. (a) Correlation between fossil age of the whale ancestors (horizontal axis) and evolutionary distance of their inferred Mb sequences from that of extant sperm whale (vertical axis). Posterior probability distributions for the sites of aMbWp (b), aMbWb’ (c), and aMbWb (d) sequences. Horizontal and vertical axes show posterior probability bins and fractional frequency of inferred sites, respectively.
