Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 12, Problem 3CONQ
Summary Introduction
To review:
The definition of consensus sequence, their examples and the location of the sequence within the bacterial promoters, along with the function of said sequence.
Introduction:
Bioinformatics is a combination of biology, information engineering, computer science, statistics, and mathematics. JalView and UGENE are some of the software used to calculate and visualize the DNA(deoxyribonucleic acid) sequences. DNA sequencing is done to get
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Students have asked these similar questions
What is a consensus sequence? How similar to the consensus sequence would you expect the promoter of a lowly expressed gene to be? Explain.
a) What is a mutation in molecular terms? b) a mutation deletes a base in the genomic DNA discuss how that will affect the reading frame and expression product production.
Using the following list of codons describe, using diagrams etc., how information stored in
the DNA is translated into a peptide. Be sure to discuss all steps. In other words, use a diagram and give me sequences, transcription and translation steps. Show the sequences of the sense and the other DNA strand, the mRNA and the tRNA’s.
UUU -phenylalanine UCU -serine AUG –initiation/methionine
CUU -leucine ACU -threonine
GUU -valine UAA -Termination
For each of the following, identify whether that sequence or feature of a typical protein-coding gene
would be recognizable in the specified molecule in a typical prokaryotic cell.
5' UTR in DNA?
5' UTR in mRNA?
Shine-Dalgarno in DNA?
Shine-Dalgarno in polypeptide?
Promoter in RNA?
Promoter in polypeptide sequence?
Stop codon in mRNA?
Stop codon in the polypeptide sequence?
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Chapter 12 Solutions
Genetics: Analysis and Principles
Ch. 12.1 - 1. Which of the following base sequences is used...Ch. 12.1 - Prob. 2COMQCh. 12.2 - With regard to a promoter, a transcriptional start...Ch. 12.2 - Prob. 2COMQCh. 12.2 - 3. Sigma factor is needed during which stage(s) of...Ch. 12.2 - A uracil-rich sequence occurs at the end of the...Ch. 12.3 - Which RNA polymerase in eukaryotes is responsible...Ch. 12.3 - Prob. 2COMQCh. 12.3 - Prob. 3COMQCh. 12.3 - Prob. 4COMQ
Ch. 12.4 - Which of the following are examples of RNA...Ch. 12.4 - A ribozyme is a. a complex between RNA and a...Ch. 12.4 - Prob. 3COMQCh. 12.4 - Prob. 4COMQCh. 12.5 - 1. Which of the following is not a key difference...Ch. 12 - Prob. 1CONQCh. 12 - Prob. 2CONQCh. 12 - Prob. 3CONQCh. 12 - Prob. 4CONQCh. 12 - 5. Mutations in bacterial promoters may increase...Ch. 12 - Prob. 6CONQCh. 12 - 7. In Chapter 9, we considered the dimensions of...Ch. 12 - 8. A mutation within a gene sequence changes the...Ch. 12 - Prob. 9CONQCh. 12 - At the molecular level, describe how factor...Ch. 12 - Prob. 11CONQCh. 12 - What is the complementarity rule that governs the...Ch. 12 - 13. Describe the movement of the open complex...Ch. 12 - 14. Describe what happens to the chemical bonding...Ch. 12 - Prob. 15CONQCh. 12 - Prob. 16CONQCh. 12 - Prob. 17CONQCh. 12 - Mutations that occur at the end of a gene may...Ch. 12 - If the following RNA polymerases were missing from...Ch. 12 - 20. What sequence elements are found within the...Ch. 12 - 21. For each of the following transcription...Ch. 12 - 22. Describe the allosteric and torpedo models for...Ch. 12 - Which eukaryotic transcription factor(s) shown in...Ch. 12 - 24. The initiation phase of eukaryotic...Ch. 12 - A eukaryotic protein-encoding gene contains two...Ch. 12 - 26. Describe the processing events that occur...Ch. 12 - Prob. 27CONQCh. 12 - Prob. 28CONQCh. 12 - Prob. 29CONQCh. 12 - Prob. 30CONQCh. 12 - 31. In eukaryotes, what types of modifications...Ch. 12 - Prob. 32CONQCh. 12 - Prob. 33CONQCh. 12 - 34. Figure 12.21 shows the products of alternative...Ch. 12 - 35. The processing of ribosomal RNA in eukaryotes...Ch. 12 - Prob. 36CONQCh. 12 - Prob. 37CONQCh. 12 - After the intron (which is in a lariat...Ch. 12 - Prob. 1EQCh. 12 - 2. Chapter 21 describes a technique known as...Ch. 12 - Prob. 3EQCh. 12 - As described in Chapter 21 and in experimental...Ch. 12 - Prob. 5EQCh. 12 - Prob. 6EQCh. 12 - 1. Based on your knowledge of introns and pre-mRNA...Ch. 12 - Discuss the types of RNA transcripts and the...
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- Write the terms that match the definitions given below. A) A sequence in the leader region of the mRNA thought to be responsible for routing the mRNA on the small ribosomal subunit at the beginning of translation. B) In prokaryotes, a promoter consensus sequence located 10 bases upstream from the first base transcribed. C) In eukaryotes, a promoter consensus sequence located 70 bases upstream of the first base to be transcribed. D) In eukaryotes, a promoter consensus sequence located 25 bases upstream from the first base transcribed.arrow_forwardConsider the following tRNAs, where the numbered forms represent the amino acids associated with them, answer briefly: PICTURE Question 1: The numbering indicates the order in which these tRNAs are recruited to the A site of the ribosome. Write the sequence of the mRNA being translated in the 5' - 3' direction Question 2: What is the amino acid sequence of the produced polypeptide? Question 3: Researchers discover that a mutation is in the anticodon of the gene encoding the proline tRNA of an individual. The anticodon sequence is normally 3' GGA 5', but in this individual the anticodon sequence is 3' GGG 5'. It appears that this individual suffers no adverse consequences. How can this be? (2 response items)arrow_forwardAnswer these questions concerning promoters. a) What role do promoters play in transcription? b) What is the common structure of bacterial promoter with respect to consensus sequences? c) Eukaryotic promoters are more variable than bacterial promoters. Why? d) What is the meaning of the term alternative promoter? How does the use of alternative promoters affect transcription?arrow_forward
- what is post-translational protein covalent modification? give three examples and name the enzyme that catalyzes each reaction.arrow_forwardKnowing that the genetic code is almost universal, a scientist uses molecular biological methods to insert the human β-globin gene (Shown in Figure 17.11) into bacterial cells, hoping the cells will express it and synthesize functional β-globin protein. Instead, the protein produced is nonfunctional and is found to contain many fewer amino acids than does β-globin made by a eukaryotic cell. Explain why.arrow_forwardExplain the function of spliceosomes in eukaryotic cells. The following sequence represents pre-mRNA derived from a gene coding for alpha keratin in birds. Label the sequence to show potential exon(s), intron(s) and spliceosome cut site(s). That is, put the intron(s) sequences in parentheses and use black slash symbols (/) to indicate the spliceosome cut site(s). What is the sequence of the mature MRNA after splicing? [ 5' AUGGGUUUAGGACCCCCGAUAAA 3'arrow_forward
- How were bacterial promoters first identified? Discuss their placement within the gene and roles in transcription initiation. Further discuss how the holoenzyme engages a promoter.arrow_forwardExplain what is meant by the coupling of transcription and translation in bacteria. Does coupling occur in bacterial and/or eukaryotic cells? Explain.arrow_forwardThe consensus sequences for the -35 and -10 sites are shown below. Explain what the numbers next to the nucleotides mean. If you were going to mutate two of these nucleotides in order to eliminate the function of one or both of these sites which nucleotides would you mutate and why?arrow_forward
- Shown below is a double-stranded bacterial (E. coli) DNA sequence coding for a hypothetical protein. The nucleotides are numbered 1 to 100. a)Although the transcription start site begins at the underlined C/G, which of the following is the nucleotide sequences needed upstream for transcription to actually occur? b)What are the first 15 nucleotides of the mRNA? c)What are the first 5 amino acids translated from the resulting mRNA? d)A different mutation results in the substitution of the T/A base pair at position 30 (shown in bold and underlined) with a G/C base pair. How would this mutation affect the sequence of the protein that is produced?arrow_forwardHow and when does formylmethionine become attached to the initiator tRNA in bacteria?arrow_forwardTransfer RNA molecules are quite large, given that the anticodon consists of only three nucleotides. What is the purpose of the rest of the tRNA molecule?arrow_forward
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Bacterial Genomics and Metagenomics; Author: Quadram Institute;https://www.youtube.com/watch?v=_6IdVTAFXoU;License: Standard youtube license