
CHEF gel analysis. CHEF gel electrophoresis was used to separate whole chromosomes by size. The left panel shows the gel stained with ethidium bromide, displaying all chromosomes. Lane 1 is a size ladder of S. cerevisiae chromosomes. The following lanes contain DNA prepared from the strains as indicated. Black triangles point to chromosomes with an altered size. The four right panels display Southern blot hybridizations using probes to the indicated genes.











