by Sean B. Carroll, Jennifer K. Grenier, Scott D. Weatherbee</ref>. Macroevolution also requires a large number of beneficial mutations. Creationists claim that scientific data regarding mutations causing the significant changes necessary for macroevolution is extremely damaging to the macroevolutionary position. | by Sean B. Carroll, Jennifer K. Grenier, Scott D. Weatherbee</ref>. Macroevolution also requires a large number of beneficial mutations. Creationists claim that scientific data regarding mutations causing the significant changes necessary for macroevolution is extremely damaging to the macroevolutionary position. |