Fission yeast and budding yeast are free-living haploid cells that are easily grown in the laboratory. They have different cell shapes and patterns of division. Left, fission yeast; right, budding ...

The photograph on the left shows fission yeast cells in their resting or G0 phase and the photograph on the right are of yeast cells in growth phase and undergoing cell division. Disclaimer: AAAS and ...

Yeast is a good model system for studying ageing. The researchers can easily determine the age of the cells by counting the bud scars, formed when they divide and form new cells by budding (left). As ...