There are typically four vertebrate MRF paralogues which are homologous to typically a single MRF gene in non-vertebrates. These four genes are thought to have been duplicated in the two rounds of whole-genome duplication early in vertebrate evolution that played a role in the evolution of more complex vertebrate body plans.
There are four vertebrate MRF paralogues, which are analogous to a single MRF gene found in non-vertebrates. These genes were duplicated multiple times during the early stages of vertebrate evolution, contributing to the development of more sophisticated body plans.