DNAmark™ Logic Marker contains 16 DNA bands, ranging from 100 base pairs to 10 Kb. The DNA ladder is formulated so that each band contains an amount of DNA that correlates logically to its size, allowing the user to estimate both the size and the quantity of specific fragments at a glance. The DNAmark Logic Marker can be used for procedures such as probe labeling, DNA sequencing, and optimizing insert/vector ratio in ligation reactions.