Quizlet It is found that many regulatory genes have been co-opted for the development of different structures, such as limbs or digits. This is an example of what type of biological research

evolutionary developmental biology (evo-devo)

Explanation:

Evolutionary developmental biology (evo-devo) is a relatively new field of biology focused on the comparison of developmental processes between organisms in order to infer evolutionary relationships among species and understand such developmental mechanisms. This research area has shown to be very useful to understand how morphological evolution occurred. Moreover, evo-devo also shows how changes at the genome level can be translated into morphological and phenotypic changes among species/higher taxa. Evo-devo challenges the so-called 'gene-centered point view of evolution', which holds that adaptive evolution mainly operates by means of the differential survival of ​competing (selfish) genes.