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[[File:S cerevisiae under DIC microscopy.jpg|thumb|''S. cerevisiae'', [[Differential interference contrast microscopy|differential interference contrast]] image]] | [[File:S cerevisiae under DIC microscopy.jpg|thumb|''S. cerevisiae'', [[Differential interference contrast microscopy|differential interference contrast]] image]] | ||
[[Image:20100911 232323 Yeast Live.jpg|thumb|''Saccharomyces cerevisiae''<br />Numbered ticks are 11 micrometers apart.]] | [[Image:20100911 232323 Yeast Live.jpg|thumb|''Saccharomyces cerevisiae''<br />Numbered ticks are 11 micrometers apart.]] | ||
When researchers look for an organism to use in their studies, they look for several traits. Among these are size, generation time, accessibility, manipulation, genetics, conservation of mechanisms, and potential economic benefit. The yeast species ''[[Schizosaccharomyces pombe|S. pombe]]'' and ''S. cerevisiae'' are both well studied; these two species diverged approximately {{Ma|600|300}}, and are significant tools in the study of [[DNA damage (naturally occurring)|DNA damage]] and [[DNA repair|repair mechanisms]].<ref>{{cite book |first1= Jac A. |last1=Nickoloff |first2=James E. |last2=Haber |date=2011 |chapter=Mating-Type Control of DNA Repair and Recombination in ''Saccharomyces cerevisiae'' |doi=10.1007/978-1-59259-095-7_5 |pages=107–124 |editor1-first=Jac A. |editor1-last=Nickoloff |editor2-first=Merl F. |editor2-last=Hoekstra |title=DNA Damage and Repair |series=Contemporary Cancer Research |isbn=978-1-59259-095-7|doi-broken-date=1 August 2023 | chapter-url=https://link.springer.com/chapter/10.1007/978-1-59259-095-7_5}}</ref> | |||
''S. cerevisiae'' has developed as a [[model organism]] because it scores favorably on a number of these criteria. | ''S. cerevisiae'' has developed as a [[model organism]] because it scores favorably on a number of these criteria. |