Interpretation: A base sequence for DNA that codes for the tripeptide Ala-Gly-Ser needs to be written. The possible variation in the answers needs to be explained.
Concept Introduction: A base sequence for DNA can be written by using three-letter codes for amino acids. Here, for most of the amino acids, there are single first and second-letter codes but there are 4 possible third-letter codes due to which different numbers of base sequences for DNA are possible.
Explanation of Solution
The given tripeptide is Ala-Gly-Ser. Here, the first amino acid is alanine, the second is glycine, and the third is serine.
For alanine, the first letter code word is C, the second letter code is G, and the possible third letter code words are A, G, T, and C. Thus, possible three-letter code for Ala is CGA, CGG, CGT, and CGC.
For glycine, the first letter code word is C, the second letter code is C, and the possible third letter code words are A, G, T, and C. Thus, possible three-letter codes for Gly are CCA, CCG, CCT, and CCC.
For serine, the possible first letter code words are A and T and for these second letter, code words are G and C respectively. Now, for the first letter code A, the possible third letter code words are A, G, T, and C. For the first letter code T, the possible third letter code words are A and G. Therefore, the possible three-letter code for Ser are AGA, AGT, AGT, AGC, TCA, and TCG.
Thus, a possible base sequence for the tripeptide Ala-Gly-Ser is CGACCAAGA.
Other possible base sequences can be possible for a different combination of three-letter codes for amino acids. This is the reason why different students can have different answers for the base sequence of DNA.
Chapter 24 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
- How is Talu home quer in Org. Chemistry propose a 3-butanal prepared from ketone? complete reaction for this, (to start from the guignand Meagent. ②what pocubble products could be produced from the reaction of : CA₂ CH₂ CH₂ dil H.504 A CH3 1 OBCH₂OH Naz Cr₂ 07 12504 NazCD 4 CH3CH2 07 AzS04 H3C H3C CH3-C - C - Atz но но + H, CH3 07 > ⑦Colts C614501 + (215) 504 кон 4arrow_forwardRank the following compounds most to least acidic: a) О OH 요애 OH .OH flow flow О F F F F OH F b) Ha EN-Ha CI Ha F F CI Haarrow_forwarda) b) Provide arrows to show the mechanisms and then predict the products of the following acid base reaction. Use pKas to determine which way the reaction will favor (Hint: the lower pka acid will want to dissociate) Дон OH Ha OH NH2 c) H H-O-Harrow_forward
- MATERIALS. Differentiate between interstitial position and reticular position.arrow_forwardFor each of the following, indicate whether the arrow pushes are valid. Do we break any rules via the arrows? If not, indicate what is incorrect. Hint: Draw the product of the arrow and see if you still have a valid structure. a. b. N OH C. H N + H d. e. f. مه N COHarrow_forwardDecide which is the most acidic proton (H) in the following compounds. Which one can be removed most easily? a) Ha Нь b) Ha Нь c) CI CI Cl Ha Ньarrow_forward
- Provide all of the possible resonanse structures for the following compounds. Indicate which is the major contributor when applicable. Show your arrow pushing. a) H+ O: b) c) : N :O : : 0 d) e) Оarrow_forwardDraw e arrows between the following resonance structures: a) b) : 0: :0: c) :0: N t : 0: بار Narrow_forwardDraw the major substitution products you would expect for the reaction shown below. If substitution would not occur at a significant rate under these conditions, check the box underneath the drawing area instead. Be sure you use wedge and dash bonds where necessary, for example to distinguish between major products. Note for advanced students: you can assume that the reaction mixture is heated mildly, somewhat above room temperature, but strong heat or reflux is not used. Cl Substitution will not occur at a significant rate. Explanation Check :☐ O-CH + Х Click and drag to start drawing a structure.arrow_forward
- Draw the major substitution products you would expect for the reaction shown below. If substitution would not occur at a significant rate under these conditions, check the box underneath the drawing area instead. Be sure you use wedge and dash bonds where necessary, for example to distinguish between major products. Note for advanced students: you can assume that the reaction mixture is heated mildly, somewhat above room temperature, but strong heat or reflux is not used. Cl C O Substitution will not occur at a significant rate. Explanation Check + O-CH3 Х Click and drag to start drawing a structure.arrow_forward✓ aw the major substitution products you would expect for the reaction shown below. If substitution would not occur at a significant rate under these conditions, check the box underneath the drawing area instead. Be sure you use wedge and dash bonds where necessary, for example to distinguish between major products. Note for advanced students: you can assume that the reaction mixture is heated mildly, somewhat above room temperature, but strong heat or reflux is not used. C Cl HO–CH O Substitution will not occur at a significant rate. Explanation Check -3 ☐ : + D Click and drag to start drawing a structure. © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Cearrow_forwardPlease correct answer and don't used hand raitingarrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY