Students have difficulties understanding the crossing-over field concept in genetic courses because within the concept of crossing-over there are facts and problems that are difficult to solve as well as the absence of valid, practical, and effective student worksheets. So that the learning process is complete, activities and student learning…

The plant taxonomy textbooks that are generally used in colleges need to be complemented with a DNA-based molecular review. In general, plant taxonomy textbooks devote more space to morphology than to molecular-level characteristics. The research reported here used the results of DNA-based research to develop a molecular plant taxonomy textbook.…