PRJDB3241 Mouse Evolution Project To understand evolutionary process, we established several mutation accumulation lines in mice. There are 2 types of mutation accumulation lines; one is breeding line of wild-type C57BL/6J mice and the other is of mutator mice, of which DNA polymerase delta are degaraded in replicational fidelity. Mouse Evolution Project bioproject PRJDB3241 PRJDB3241 true To understand evolutionary process, we established several mutation accumulation lines in mice. There are 2 types of mutation accumulation lines; one is breeding line of wild-type C57BL/6J mice and the other is of mutator mice, of which DNA polymerase delta are degaraded in replicational fidelity.