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Unformatted text preview: to diploid cells. A.1 An Overview of Yeast
in the Laboratory Yeast geneticists have gathered enough information on
S. cerevisiae to state with conﬁdence that single-celled
eukaryotes such as yeast express genes, organize themselves, perform biological functions, and differentiate using variations of the same processes found in multicellular eukaryotes.
Yeast has proven to be an excellent model for the study
of cell cycle control and for the dissection of eukaryotic
signal transduction pathways. Using standard genetic
analyses and newly developed genomic tools, yeast researchers continue to provide critical insights into basic
1 har06584_refA_001-020 2 11/4/06 10:09 AM Page 2 Reference A Saccharomyces cerevisiae: Genetic Portrait of a Yeast Figure A.1 Yeast cells. Phase contrast micrograph of yeast
cells showing small and large buds characteristic of different
phases of the mitotic cell cycle. The Yeast Life Cycle
Yeast cells alternate between haploid (1n) and diploid (2n)
phases in which new daughter cells arise mitotically as
buds that grow in size and eventually split from the mother
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This note was uploaded on 10/03/2013 for the course BI 206 taught by Professor Celenza during the Spring '08 term at BU.
- Spring '08