Given the difficulties in molecular genetics instruction, researchers who take a constructivist approach recommend enhancing the teaching of molecular genetics through educational methods that integrate modeling and visuali- zation (Gilbert et al. 2003). Visualization tools such as animations can be used to give an accurate and rich picture of the dynamic nature of molecules and molecular inter- action, which are often very hard to grasp from text-based presentations of information (NSF 2001). Williamson and Abraham (1995), who explored the effect of computer animations on college chemistry students, found that instruction with animations may increase conceptual understanding by prompting the formation of dynamic mental models of the particulate nature of matter. In this type of instruction, animations provided more scientifically correct visual models for submicroscopic processes.