Characterization of a family of repetitive sequences that is eliminated late during macronuclear development of the hypotrichous ciliate Stylonychia lemnae.

A repetitive element from the hypotrichous ciliate Stylonychia lemnae was characterized by restriction and hybridization analysis. This repetitive element is present in about 5,000-7,000 copies per haploid genome in the micronucleus and the macronuclear anlagen. Its DNA sequence is very conserved, but the length of the repetitive sequence blocs is variable… (More)