Complex sentence: The most well-studied species is "S. pombe"; like the distantly related "Saccharomyces cerevisiae", "S. pombe" is a significant model organism in the study of eukaryotic cell biology.
Split into simpler sentences: The most well-studied species is "S. pombe". Like the distantly related "Saccharomyces cerevisiae", "S. pombe" is a significant model organism in the study of eukaryotic cell biology.