REARRANGEMENT OF CHROMATIN STRUCTURE DURING SYNCHRONIZED MEIOSIS IN LILIUM-CANDIDUM L

We studied quantitative changes in chromatin structure in synchronized dividing meiotic cells (microsporocytes) during prophase I of meiosis in lily. The meiotic and somatic cells differed by electrophoretic mo bility of subnucleosomes after chromatin hydrolysis with staphylococca l nuclease and by the pattern of subnucleosomes at different stages of prophase I. Length of the DNA fragments and histone pattern were also different. The most pronounced differences in chromatin structure bet ween different cell types were revealed by protein electrophoresis of nuclease-resistant chromatin.