Centromere for Educational Chromosome Pop Beads

These are replacement centromeres for the popular chromosome pop bead med that is sold by Carolina Scientific for education. I found that my set had too few centromeres for all my students, so I created this object to supplement. (Packs of ten extra centromeres sell for $38 from Carolina.) Each centromere has a small slit in which to attach a magnet so that sister chromatids can snap together.