eukMicrGenetics - GENETIC ANALYSIS IN EUKARYOTIC...

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GENETIC ANALYSIS IN EUKARYOTIC MICROORGANISMS Chapter 5 (pp. 142-155)
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OUTLINE Types of eukaryotic life cycles Diploid life cycle Haploid life cycle Alternating haploid-diploid life cycle Tetrad analysis in the unordered asci (yeast) Yeast life cycle Mendelian segregation in tetrad analysis Phenotype detection in yeast Linkage in tetrad analysis Mapping in tetrad analysis Tetrad analysis in the ordered asci (Neurospora) Neurospora life cycle First-divisioon and second-division segregation Determining a distance between gene and centromere
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DIPLOID LIFE CYCLE (most animals including humans)
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HAPLOID LIFE CYCLE (some fungi and protists)
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ALTERNATING HAPLOID-DIPLOID LIFE CYCLE (plants, some fungi and protists)
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FLOWERING PLANTS ARE PREDOMINANTLY DIPLOID BUT INCLUDE A HAPLOID (GAMETOPHYTE) STAGE
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QUESTION Which type of the abovementioned life cycles (if any) is characteristic of bacteria?
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Tetrad analysis in fungi Model organisms for understanding the mechanism of recombination because all four haploid products of meiosis are contained in ascus Ascospores within ascus germinate into haploid individuals Saccharomyces cerevisiae – bakers yeast Neurospora crassa – bread mold
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Saccharomyces cerevisiae (haplod-diploid) life cycle Fig. 5.14 a
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This note was uploaded on 12/17/2009 for the course BIO 2354 taught by Professor Brockett during the Spring '08 term at Georgia Institute of Technology.

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eukMicrGenetics - GENETIC ANALYSIS IN EUKARYOTIC...

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