When a cell divides to form two new cells, all the chromosomes in the cell must be copied and equally distributed among the new cells. Centromeres are chromosomal regions that are essential for chromosomes to be equally partitioned to newly formed cells. The DNA at centromeres is packaged with special proteins (forming silent chromatin) that cause genes placed in these regions to be silenced so that they cannot be switched on. Robin has discovered that silent chromatin also exists at the centromeres of fission yeast, and is important for centromeres to deliver a copy of each chromosome to daughter cells.