MCB164+MT1+S05+KEY

MCB164+MT1+S05+KEY - Name_KEY MCB164 Spring 2005 Page 1 of...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Name__________KEY_____________________ MCB164 Spring 2005 Page of 6 ID #________________________________ FIRST MIDTERM April 25, 2005 Question Points Score 1 9 Mean = 56.8+ 11.1 2 14 3 12 High = 33 4 15 Low = 33 5 20 6 30 Total 100 This examination is closed book. There are 6 pages to the exam. Please count them before you start to make sure all are present . Please write your name on each page of the exam . Answer each question in the space provided. If additional space is required use the back of the page and indicate clearly that you continued your answer on the back. Do not attach additional pages. GOOD LUCK! Student authorization: I authorize the instructor to return the graded exam to me in the main office or to distribute it in the bin for me to pick up. Signature _____________________________ Date_____________________ 1
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Name__________KEY_____________________ MCB164 Spring 2005 Page of 6 1. (9 points) Give a hypothetical example that illustrates the following genetic formalism: An informational suppressor is typically allele-specific and gene non-specific in the manner in which it suppresses a mutant phenotype. A nonsense mutation (for example, an amber mutation) in YFG1 (your favorite gene) can be suppressed by a compensatory mutation in a tRNA, allowing the recognition of amber stop codons by an amino acid charged tRNA, thereby bypassing the early translational stop in amber yfg1 alleles. Such an “informational suppressor” would likely be able to suppress an amber mutation (and ONLY an amber mutation) in SUG1 (some uninteresting gene). Informational suppressors are useful for dissecting the genetic code, but will not help in finding other genes that interact with or act in parallel pathways with YFG1 . 2. (14 points) You have just started a internship to study SGS1 in yeast. Write a 2-3 sentence excerpt from your e-mail to your best friend where you describe your new project using the following words correctly:
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern