Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 18, Problem 12TYU
Summary Introduction
To explain: The most highly conserved regions of the human genome do not code for proteins.
Introduction:
Conserved region of the human genome consists of sequences that are similar among species. They are known as orthologous sequences. These sequences are evolutionarily conserved through natural selection. A highly conserved region consists of sequences that remained the same since a long period of time. They are often non-coding sequences. For example, homeobox is a highly conserved sequence found in eukaryotes and regulates targeted gene expression.
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Chapter 18 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
Ch. 18.1 - How does binding of the trp corepressor to the trp...Ch. 18.1 - Describe the binding of RNA Polymerase,...Ch. 18.1 - WHAT IF? A certain mutation in E. coli changes...Ch. 18.2 - In general, what are the effects of histone...Ch. 18.2 - Compare the roles of general and specific...Ch. 18.2 - WHAT IF? Suppose you compared the nucleotide...Ch. 18.2 - Once mRNA encoding a particular protein reaches...Ch. 18.3 - Compare miRNAs and siRNAs, including their...Ch. 18.3 - WH AT IF? Suppose the mRNA being degraded in...Ch. 18.4 - MAKE CONNECTIONS As you learned in Chapter 12,...
Ch. 18.4 - MAKE CONNECTIONS Explain how the signaling...Ch. 18.4 - How do fruit fly maternal effect genes determine...Ch. 18.4 - Prob. 4CCCh. 18.5 - MAKE CONNECTIONS The p53 protein can activate...Ch. 18.5 - Under what circumstances is cancer considered to...Ch. 18.5 - Prob. 3CCCh. 18 - Compare and contrast the roles of a corepressor...Ch. 18 - Describe what must happen in a cell for a gene...Ch. 18 - Why are miRNAs called noncoding RNAs? Explsin how...Ch. 18 - Describe the two main processes that cause...Ch. 18 - Compare the usual functions of proteins encoded by...Ch. 18 - If a particular operon encodes enzymes for making...Ch. 18 - Muscle cells differ from nerve cells mainly...Ch. 18 - The functioning of enhancers is an example of (A)...Ch. 18 - Cell differentiation always involves (A)...Ch. 18 - Which of the following is an example of...Ch. 18 - What would occur if the repressor of an inducible...Ch. 18 - Absence of bicoid in mRNA from a Drosophila egg...Ch. 18 - Which of the following statements about the DNA in...Ch. 18 - Within a cell, the amount of protein made using a...Ch. 18 - Prob. 10TYUCh. 18 - Prob. 11TYUCh. 18 - Prob. 12TYUCh. 18 - Prob. 13TYUCh. 18 - Prob. 14TYUCh. 18 - WRITE ABOUT A THEME: INTERACTIONS In a Short essay...Ch. 18 - SYNTHESIZE YOUR KNOWLEDGE The flashlight fish has...
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- Discuss the following: “During the evolution of life on earth, RNA lost its glorious position as the first self- replicating catalyst. its role now is as a mere messenger in the information flow from DNA to protein.”arrow_forwardYou are interested in finding out the function of a particular gene in the mouse genome. You have determined the nucleotide sequence of the gene, defined the portion that codes for its protein product, and searched the relevant database for similar sequences; however, neither the gene nor the encoded protein resembles anything previously described. What types of additional information about the gene and the encoded protein would you like to know in order to narrow down its function, and why?arrow_forwardThe relationship between DNA, RNA and Protein constitute the “central dogma of molecular biology”. Explain this statementarrow_forward
- . You obtain the DNA sequence of a mutant of a 2-kb genein which you are interested and it shows base differencesat three positions, all in different codons. One is a silentchange, but the other two are missense changes (they encode new amino acids). How would you demonstratethat these changes are real mutations and not sequencing errors? (Assume that sequencing is about 99.9 percent accurate.)arrow_forwardMatch each of the following examples with the hypothesis it argues against. Example The gene coding for keratin A gene coding for a tRNA Three genes, each coding for one of the G protein subunits (a, ß and y) A gene that undergoes alternative splicing Hypothesis One gene → one polypeptide One gene→→ one enzyme One gene → one protein One gene → one proteinarrow_forwardDiagram the central dogma of molecular biology (biological information flow) and include RNA processing in your diagram.arrow_forward
- Geneticists have found that when they cut out a eukaryotic gene from genomic DNA that they can hybridize one of the strands of that gene to the mRNA for that gene by allowing the strands to hydrogen bond. Why is it sometimes claimed that alternative splicing of exons from a single gene results in a set of proteins of related function?arrow_forwardA gene affecting the behavioral outlook of individuals was discovered in several humans who can overcome anxiety caused by life's problems. Part of the gene that į translated into protein has a sequence 3'-GGATCCCGAATGTAATGCGTGCTC AATGGTAGTACGGC-5'. 1. What is the complementary strand of the DNA? 2. What is the sequence of the MRNA product after translation? 3. What is the sequence of the peptide encoded by the portion of the gene? (Use one letter symbol of amino acids)arrow_forwardBased on our modern understanding, what revisions are necessary to the original one-gene / one-enzyme hypothesis? (Check all that apply.) Alternative splicing allows one gene to encode multiple polypeptides. Some genes encode RNAs, not enzymes. Some genes encode lipids, not enzymes. Some genes encode polypeptides that are not enzymes, such as structural proteins. Proteins as functional units may be composed of several polypeptides, so genes may encode just one polypeptide within a larger protein. Enzymes are not encoded by genes after all — they are constructed through separate biochemical processes.arrow_forward
- Which of the following describe how the order of nucleotide bases along a gene in the DNA ultimately determines the primary structure of a protein and how the primary structure ultimately determines the three-dimensional shape and function of the protein coded for by that gene. A Certain amino acids in a protein interact with other amino acids in that same protein and so the order of amino acids ultimately determines the 3-dimensional tertiary structure of that protein. B The order of nucleotide bases along the DNA is transcribed into complementary tRNA which is translated into the correct amino acid sequence for the protein by mRNA. C The order of nucleotide bases along a gene determines the order of amino acids in the resulting protein. The order of amino acids in the protein is called its secondary structure.arrow_forwardThe sequence below shows the non-coding strand from the whole of the transcribed region of a very short gene. 5’-GGCTTCTTTAGTACTGGCCAGTGGGATCCAAGTAGGCTGCCATTTCGT-3’ Write out the sequence of the mRNA from this gene in the orientation 5′ → 3′ and, using the genetic code (see Fig. 1. overleaf) deduce the amino acid sequence of the peptide it encodes (NB you should read about the operation of the genetic code prior to attempting this question).arrow_forwardThey want to insert a small sequence into the gene which will be read in the same frame, so that itforms part of the final protein product. They want this new section of protein to be at the N-terminus ofthe original protein.Which of the lettered arrowheads indicates the location where this insertion would need to be?(There could be one answer or several. Give all answers that apply).arrow_forward
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