StudyQuestions_Week2 - Biology 180 Week 2 Study Questions...

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Biology 180 Week 2 Study Questions Spring 2010 Do these questions with your study group (~4 people). Follow these rules: Everyone must participate in every question that you work on. Listen to each person’s contributions. At least once during each study session, each group member should challenge another member’s ideas. Assign roles: If your group isn’t part of a large session at CLUE or Tribeta or the IC, one person should serve as timekeeper; one as organizer (keeping people on task and getting a consensus on when to move on to the next question for discussion); one as group-dynamics checker (making sure everyone is heard and respectful); one as challenger (making sure that all ideas are carefully considered). Format: 1. Each person should write answers to the first 4 questions on their own, in 15 minutes or less (these questions would be worth about 30 points on an exam). 2. Discuss each question (3 minutes each). 3. Exchange papers and use the answer key on p3 to grade each other for full credit, partial credit, or no credit (1 minute each). 4. Read through the rest of the question list. Each person should decide which question they want to work on most (meaning that they are LEAST confident about). 5. Go through the rest of the questions, taking turns to decide which to discuss next. 6. Each member of the group should write 2 exam questions, based on key concepts from this week, identified in your weekly notes summary. Use these questions to quiz each other. 1. Why did the results of Mendel’s monohybrid cross conflict with the predictions of: Blending inheritance: Inheritance of acquired characters: 2. In peas, let P = purple flowers and p = white flowers; T = terminal flowers and t = axial flowers. A pptt individual crosses with an individual with purple, terminal flowers. ½ of the F 1 s have purple, terminal flowers; ½ have white, terminal flowers. Was the purple, terminal-flowered parent homozygous or heterozygous at the 2 genes? Show your work. F 1 Punnett square: Flower color gene: ___________________ Flower position gene: _______________________ (homozygous or heterozygous) (homozygous or heterozygous) 3. A female fruit fly with ruby eyes, forked bristles, and ebony body mates with a male with normal eyes, normal bristles, and normal body color (he is homozygous). X R normal eyes X F normal bristles E normal body color
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X r ruby eyes X f forked bristles e ebony body Write the parental genotypes: Draw the parental genotypes (draw and label the chromosomes) F 1 Punnett square: What are the F 1 phenotypes and frequencies (or ratios)? Assume no crossing over occurs. How many different gamete genotypes will the F
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StudyQuestions_Week2 - Biology 180 Week 2 Study Questions...

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