On ring chromatids

The paper studies mammalian chromatids conformed as donut-like rings. Albei t enacting many topologic and dynamic aspects of straight chromatids (e.g. replication, eversion, antipodal segregation at anaphase, etc.), rings diff er in certain properties regarding in particular disposal of soliton-like, kinked frustrations of their chirality during recurrent sister chromatid ex changes (SCEs).