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Biol Bull 110: 352-357. (June 1956)
© 1956 Marine Biological Laboratory
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MATING TYPES IN OXYTRICHA AND THE SIGNIFICANCE OF MATING TYPE SYSTEMS IN CILIATES

R. W. SIEGEL 1

1 Zoology Department, University of Pennsylvania, Philadelphia 4, Pennsylvania

A study of Oxytricha bifaria revealed a system of nine interbreeding mating types. The mating behavior and life cycle of this organism are described. Two hypotheses which account for systems of multiple mating types in some ciliates and binary mating types in others are presented.






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Copyright © 1956 by the Marine Biological Laboratory.