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The three most common types of markers used today are RFLP, RAPD and isozymes. Of the three marker types, RFLPs have been used the most extensively.
Highlighters and fine-line markers appeared in 1970's. Binney & Smith, who made Crayola, bought name âMagic Markerâ in 1989 and started selling improved permanent markers and highlighters. In 1996 they started selling Magic marker II and dry-erase markers for writing on whiteboards and glass.