Lecture 21 SRR F-2011

Lecture 21 SRR - Biology 313 Lecture 21 ISU students hiking on Beach Cliffs to look at rocks and marine organisms(photo courtesy of Emily

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Unformatted text preview: Biology 313 Lecture 21 Oct 14, 2011 ISU students hiking on Beach Cliffs to look at rocks and marine organisms (photo courtesy of Emily Vonderhaar, Bio 313 student). Mediterranean Sea Biol 394 in Spain (3 or 6 credits): ISU on the Mediterranean http://www.language.iastate.edu/valencia/ Chapter 9: Chromosome Mutations 1. Chromosome morphology 2. Chromosome rearrangements A. Duplications B. Deletions C. Inversions D. Translocations 3. Aneuploidy 4. Polyploidy Chapter 9 : Chromosome Mutations (Problems) Problems – Concept Checks 1, 2, 4 – Worked Problems at the end of chapter: 1 – Comprehension & Application Questions at end of Chapter: 1-6; 9, 11, 18, 19, 22, 24 Chromosome mutations • Variations in number and/or structure of chromosomes • Three classes: • Rearrangements • Aneuploids • Polyploids Review Ch. 2: Chromosome Morphology 2 arms equal length Long arm + knob (satellite) Centromere at end Long arm + short arm Chromosome Banding Staining helps distinguish chromosomes of similar morphology from one another General procedure: Make karyotype from dividing cells on a microscope slide, then stain the fixed chromosomes e.g., stain with G iemsa dye: it stains AT- rich regions, reveals G bands , and after staining longer, C-bands (c entromere bands) G bands (AT-rich) Giemsa staining for chromosme structure C bands c entromere Chapter 9: Chromosome Mutations 1. Chromosome morphology 2. Chromosome rearrangements A. Duplications B. Deletions C. Inversions D. Translocations 3. Aneuploidy 4. Polyploidy Rearrangements-Change structure of chromosome-4 types of rearrangements: Duplications Deletions Inversions Translocations Chapter 9: Chromosome Mutations...
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This note was uploaded on 11/17/2011 for the course BIOLOGY 313 taught by Professor Steverodermel during the Fall '11 term at Iowa State.

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Lecture 21 SRR - Biology 313 Lecture 21 ISU students hiking on Beach Cliffs to look at rocks and marine organisms(photo courtesy of Emily

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