Fig. 3. Several independent mutational events have led to loss of myoglobin (Mb) expression during evolution of the icefish family. Expression of Mb is mapped on the consensus phylogeny of the Family Channichthyidae. Vertical red bars indicate points of independent mutational events leading to loss of Mb expression. The figure is modeled after that from Grove et al. (Grove et al., 2004) and based upon a cladogram originally presented by Near et al. (Near et al., 2003).