Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 12.3, Problem 1CC
Summary Introduction
To explain: Whether ends of protein coding genes have a poly T region that acts as template for the synthesis of a poly A tail in mRNA.
Introduction: The poly A tail in mRNA is a adenine string of about 100 to 200
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Chapter 12 Solutions
Biology
Ch. 12.1 - What disease would result if a person inherited...Ch. 12.1 - Prob. 2CCCh. 12.1 - What is the direction of flow of genetic...Ch. 12.2 - Core Skill: Connections Look back at the role of...Ch. 12.3 - Prob. 1CCCh. 12.4 - Prob. 1CCCh. 12.4 - Prob. 1EQCh. 12.4 - Prob. 2EQCh. 12.4 - Prob. 3EQCh. 12.5 - Core Skill: Connections Look back at Figure 6.3,...
Ch. 12.5 - Prob. 2CSCh. 12.6 - Prob. 1CCCh. 12 - Which of the following best represents the central...Ch. 12 - A mutation prevents a gene from being transcribed...Ch. 12 - Prob. 3TYCh. 12 - Prob. 4TYCh. 12 - If a eukaryotic mRNA failed to have a cap attached...Ch. 12 - Prob. 6TYCh. 12 - Prob. 7TYCh. 12 - During the initiation of translation, the first...Ch. 12 - Prob. 9TYCh. 12 - Prob. 10TYCh. 12 - Prob. 1CQCh. 12 - Prob. 2CQCh. 12 - Prob. 3CQCh. 12 - Prob. 1COQCh. 12 - Prob. 2COQ
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- What is the total size of the mature i.e. fully processed mRNA in nucleotides? How many amino acids would the encoded protein be? Assume that the N- terminal Met encoded by the AUG start codon, is NOT cleaved from the protein?arrow_forwardExplain why the translation of a given mRNA can be inhibited by a segment of its complementary sequence, a so-called antisense RNA.arrow_forwardHow does the poly(A) tail affect mRNA stability?arrow_forward
- In eukaryotic cells, mRNAs have been found to have a circular arrangement in which proteins hold the poly-A tail near the 5’ cap. How might this increase translation efficiency?arrow_forwardWhat is the sequence of bases in the template strand of DNA that codes for the mRNA in Problem?arrow_forwardA eukaryotic cell carrying out transcription and RNA processing is incubated with 32P-labeled ATP. Where will the radioactive isotope appear in mature mRNA if the ATP is labeled at the (a) α position, (b) β position, and (c) γ position?arrow_forward
- Here is a eukaryotic gene. The numbers given are base pairs of exon and intron. How long in bases will the pre mRNA transcript be? Explain briefly. What is the maximum number of amino acids that could make up the protein product from the final mRNA? Explain briefly.arrow_forwardWhat role does the poly(A) tail play in mRNA function?arrow_forwardGiven the following mRNA sequence: 5-AUCCCGUAUGCCCGGGAGCUAGCCCAGC-3 a) Label the first condon, the stop codon, the untranslated regions and predict the amino acid sequence of the polypeptidarrow_forward
- Suppose the codon sequence GUGCAAUUCGAGGCC has a single base pair mutation to GUGCAAUUCAAGGCC. If the old protein sequence was Val-Gln-Phe-Glu-Ala, what will be the new sequence encoded by the mutant gene? ____________________________.arrow_forwardDoes RNA Polymerase II terminate transcription at the polyadenylation signal? Describe in discrete steps how a polyadenylation signal contributes to the formation of a mature mRNA with a poly A tail of more than 300 nucleotides long How does this poly A tail affect the mature mRNA?arrow_forwardConsider the following mRNA base sequence 5' CUG-CAC 3' (a) What dipeptide is coded for by this mRNA? (b) What dipeptide is formed if a mutation converts CUG to CUU? (c) What dipeptide is formed if a mutation converts CAC to CGC? (d) What dipeptide is formed if a mutation converts CUG to CUU and CAC to CGC?arrow_forward
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