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Pedigree Analysis Michelle Martin Munford High School mmartin@tipton-county.com

Pedigree Analysis Michelle Martin Munford High School mmartin@tipton-county.com. Navigation Page. Item Analysis Standardized Test Item Test Item Type Test Item Structure Embedded Content and Skills. Standards Correlation Content Clarification Strand Map (Science).

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Pedigree Analysis Michelle Martin Munford High School mmartin@tipton-county.com

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  1. Pedigree Analysis Michelle Martin Munford High School mmartin@tipton-county.com

  2. Navigation Page Item Analysis • Standardized Test Item • Test Item Type • Test Item Structure • Embedded Content and Skills • Standards Correlation • Content Clarification • Strand Map (Science)

  3. Standardized Test Item NavigationPage

  4. Characterized Item What type of test item is this? • Enhanced Multiple Choice NavigationPage

  5. Test Item Structure • Stem: Determine the genetic probability of a child inheriting the disorder by interpreting the enclosed pedigree • Diagram: The pedigree illustrates 3 generations of a family and depicts affected, unaffected, and carrier individuals. A key is included so that the student can identify the sex and type of each individual. • Distractors: All involve varying amounts of inheritance probabilities • Correct answer choice: B • What makes this the correct choice? Students can complete a simple monohybrid crossto determine probability NavigationPage

  6. Embedded Concepts & Process Skills - Correct Choice: B – dominant alleles will mask recessive alleles - Concepts and Ideas: monohybrid cross/ Punnett square chromosomes heterozygous vs. homozygous DNA modes of inheritance genotypic ratios autosomes vs. sex chromosomes genetic disorders genotypes dominant vs. recessive traits sexual reproduction/ crossing over of alleles - Process Skills: Interpreting a diagram, completing a Punnett square - Distractor Information: All genetic disorders are not sex-linked, nor are they always recessive NavigationPage

  7. Connection to Standards Standard Number 4.0: Genetics and Biotechnology Learning Expectations: 4.4  apply the principles of Mendelian inheritance to make predictions about offspring. 4.8  investigate the scientific and ethical ramifications of genetic engineering, recombinant DNA, selective breeding, hybridization, cell and tissue culturing, transgenic animals, and DNA fingerprinting. NavigationPage

  8. Content Clarification See Content Clarification NavigationPage

  9. Strand Map Refer to page 71 of the Atlas of Science Literacy . NavigationPage

  10. Instructional Plan • Internet Exploration: Pedigree Analysis and Genetic Prediction • Structured Controversy: Genetic Testing and Discrimination

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