2007_121_final_white_key_post

2007_121_final_white_key_post - Name MCB121, Page 1 of 12...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Name MCB121, Page 1 of 12 Last, First Harmer Student Authorization: I, , authorize the University to distribute publicly this graded exam ( e. g. , handed out in class, or left in a bin for me to pick up). Signature Date MCB121 June 13, 2007, Final Exam Instructions: This is a closed book, closed note test. The use of all electronic devices during the exam is prohibited. There are 12 pages in this exam including the cover sheet, please count them before you start to make sure all are present. Write your name on each page of the exam. Write your answers in the space provided below each question. If you need more space use the back of the page and indicate clearly that you have continued your answer on the back. Do not use additional paper. Question Value Score 1 14 2 10 3 16 4 26 5 16 6 16 7 12 8 12 9 27 10 15 11 36 Total 200 Name MCB121, Page 2 of 12 Last, First Harmer 1. (14) Embyronic development in Drosophila is an extremely well-studied process from which a number of general principles of developmental regulation have been determined. a) (6) Indicate which of the below process(es) are NOT important in early Drosophila development, as discussed in class (you may need to indicate more than one process). Diffusion of proteins and mRNAs Repression of gene expression Localization of maternal mRNAs Activation of gene expression Binding of steroid hormones to receptor proteins b) (8) Early in development, the Kni and Kr genes have overlapping expression patterns. However, soon thereafter their expression becomes non-overlapping; a nucleus expresses only one or the other gene. Below, indicate the genetic interactions between these genes that result in this non-overlapping expression (draw in lines and arrows as appropriate). Kni Kr 2. (10) For each of the below pairs, circle the word or phrase best associated with active gene expression: c-Myc or transposon extended beads-on-a-string or 30 nm fiber HDAC or HAT interphase chromosome or metaphase chromosome heterochromatin or euchromatin Name MCB121, Page 3 of 12 Last, First Harmer 3. (16) For each of the following, mark the one best answer for each question (4 points each). a) The high processivity of DNA Pol is due to: _____ its association with DNA helicase _____ its association with the sliding clamp _____ its high affinity for DNA _____ its ability to synthesize DNA in both the 5 to 3 and 3 to 5 directions _____ its low rate of misincorporation combined with its proofreading function b) Indicate which of the below statements is NOT true of topoisomerase: _____ ATP hydrolysis is not required for catalysis by either topoisomerase I or topoisomerase II. _____ Topoisomerases relieve the supercoiling caused by DNA duplex melting....
View Full Document

Page1 / 12

2007_121_final_white_key_post - Name MCB121, Page 1 of 12...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online