Pairing

Under the conditions of starvation, pairs of sexually mature Tetrahymena Thermophila cells with different mating types can undergo pairing to cross genetic information and increase genotypic diversity.

Articles:

Ruehle, M. D., Orias, E., & Pearson, C. G. (2016). Tetrahymena as a Unicellular Model Eukaryote: Genetic and Genomic Tools. Genetics203(2), 649–665.