Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 11.2, Problem 1CS
Core Skill: Modeling The goal of this modeling challenge is to predict the hydrogen-bonding relationship between O6-MeG and cytosine.
Modeling Challenge: As discussed in Chapter 15, certain chemicals, such as nitrogen mustard and ethyl methanesulfonate, can modify the structures of DNA bases. For example, a methyl group (─CH3) can be attached to the oxygen atom on guanine, thereby creating 6-O-methylguanine (O6-MeG), as shown to the right. When O6-MeG is included in a DNA strand, it can form only two hydrogen bonds with cytosine instead of three. Draw a model for the base pairing between O6-MeG and cytosine.
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Students have asked these similar questions
Original sequence:
Consider the following coding 71 nucleotide DNA template sequence (It does not contain a translational start):
5’-GTTTCCCCTATGCTTCATCACGAGGGCACTGACATGTGTAAACGAAATTCCAACCTGAGCGGCGT GTTGAG-3’
Question:
4) In a mutant you discovered that the underlined nucleotide has been deleted. What would the resulting peptide sequence be? What type of mutation is this?
5’-GTTTCCCCTATGCTTCATCACGAGGGCACTGACATGTGTAAACGAAATTCCAACCTGAGCGGCGT GTTGAG-3
Using Fig. as a guide, draw the complete structure of a nucleoside triphosphate before and after it becomes incorporated into a polynucleotide chain. Draw the structure that would result if the newly formed phosphodiester bond were hydrolyzed.
DNA contents of nitrogenous bases
• %A = %T
%C = %G
• A+G = C+T
%3D
Example: if 35% of the bases of a DNA
-
molecule is thymine what the % of Cyosine?
Chapter 11 Solutions
Biology
Ch. 11.1 - Prob. 1CSCh. 11.1 - Prob. 1EQCh. 11.1 - Prob. 2EQCh. 11.1 - CoreSKILL In the experiment of Avery, MacLeod,...Ch. 11.2 - Prob. 1CCCh. 11.2 - Prob. 2CCCh. 11.2 - Core Skill: Modeling The goal of this modeling...Ch. 11.2 - Prob. 2CSCh. 11.3 - If this experiment was conducted for four rounds...Ch. 11.4 - Molecular Mechanism of DNA Replication Concept...
Ch. 11.4 - Prob. 2CCCh. 11.4 - Prob. 3CCCh. 11.4 - Prob. 4CCCh. 11.5 - Prob. 1CCCh. 11.5 - Prob. 1CSCh. 11 - Why did researchers initially believe that the...Ch. 11 - Prob. 2TYCh. 11 - Which of the following equations is accurate...Ch. 11 - Prob. 4TYCh. 11 - Which of the following statements about the...Ch. 11 - Meselson and Stahl were able to demonstrate...Ch. 11 - During replication of a DNA molecule, the daughter...Ch. 11 - Prob. 8TYCh. 11 - A nucleosome is a. a dark-staining body composed...Ch. 11 - The conversion of euchromatin into heterochromatin...Ch. 11 - What are the four key criteria that the genetic...Ch. 11 - A double-stranded DNA molecule contains 560...Ch. 11 - Prob. 3CQCh. 11 - Prob. 1COQCh. 11 - CoreSKILL How might you provide evidence that DNA...
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- INSTRUCTION: = IF BOTH STATEMENT ARE TRUE = IF FIRST STATEMENT IS TRUE WHILE SECOND STATEMENT IS FALSE = IF FIRST STATEMENT IS FALSE WHILE SECOND STATEMENT IS TRUE = IF BOTH STATEMENTS ARE FALSE STAMENT 1: If 3’ ATTG 5’ is transcribed, the complementary strands is 5’ UAAC 3’ STAMENT 2: Guanine and Cytosine are purine bases ANSWER: STAMENT 1: The general term for the enzyme that connects nucleotide triphosphates in DNA is DNA transferase STAMENT 2: The enzyme that unwinds the double stranded DNA is topoisomerase ANSWER: STAMENT 1: The name of the compound formed when uracil is bonded to ribose is uradine STAMENT 2: The piece of nucleic acid that is complementary to the DNA template and serves as a starting point of replication is called RNA promoter ANSWER:arrow_forwardCompare and contrast the structure of DNA and RNA. Be sure to describe each of the three components of a nucleotide for both DNA and RNA along with the types of bonds formed between the components. In addition, explain: how the nucleotides link together to form each molecule, why the prime ends are labeled 5’ and 3’, what antiparallel is, what phospodiester linkages are and what complementary base pairing is.arrow_forwardInstructions: Express your own gene! (1) Make up a DNA sequence of at least 18nucleotides and then (2) show the mRNA sequence that will be made via transcription,(3) show the tRNAs that will base pair and deliver the amino acids, and (4) the aminoacid sequence of the resulting protein. You can use the single letter abbreviations forDNA and RNA nucleotides and the three-letter abbreviations for the amino acids.arrow_forward
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