Sabri Zain's Freshwater Protozoa of north Cambridgeshire


Specimen 057

Reproduction in Euplotes, a genus of ciliates, is primarily asexual, by binary fission. In the process of binary fission, an organism duplicates its genetic material, or deoxyribonucleic acid (DNA), and then divides into two parts (cytokinesis), with each new organism receiving one copy of DNA. However, sexual reproduction also occurs by conjugation, a process by which two organisms exchange nuclear material. We're not quite sure which is the case in this particular intimate moment.