Conjugation in Paramecium: a sexual process that yields genetic recombination.
- Meiosis of micronucleus
produces 4 haploid micronuclei.
- Three micronuclei
disintegrate; the remaining one divides by mitosis.
- The cells exchange one micronucleus;
then fuse, becoming diploid.
- Three rounds of mitosis without cytokinesis produce eight micronuclei.
- The original macronucleus disintegrates.
- Two rounds of cytokinesis partition one macronucleus
and one micronucleus
into each of 4 daughter cells.