http://en.wikipedia.org/wiki/Tetrahymena
Tetrahymena can be induced to undergo conjugation by washing which causes rapid starvation.When starved, T. thermophila cells change into fast-swimming dispersal forms. When such cells of one mating type encounter cells of a complementary mating type conjugation can occur. During conjugation two cells pair, form a temporary junction and exchange gamete nuclei. They then generate and differentiate the nuclei of their sexual progeny. This process takes about 12 hours. The sequence of events during conjugation is outlined in the accompanying figure.
Tetrahymena can be induced to undergo conjugation by washing which causes rapid starvation.When starved, T. thermophila cells change into fast-swimming dispersal forms. When such cells of one mating type encounter cells of a complementary mating type conjugation can occur. During conjugation two cells pair, form a temporary junction and exchange gamete nuclei. They then generate and differentiate the nuclei of their sexual progeny. This process takes about 12 hours. The sequence of events during conjugation is outlined in the accompanying figure.
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