Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 15, Problem 17TYK
Summary Introduction
To review:
The process of alternative splicing and exon shuffling affect the rate at which new proteins evolve.
Introduction:
mRNAs (messenger ribonucleic acid) carries genetic information from DNA (deoxyribonucleic acid) to ribosome. RNA polymerase synthesizes a precursor mRNA (pre-mRNA) in eukaryotes, which is then processed to form mRNA in a translatable form. The noncoding sequences called introns are removed and coding RNA sequences called exons are joined.
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Chapter 15 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 15.1 - Prob. 1SBCh. 15.1 - If the codon were five bases long, how many...Ch. 15.2 - For the DNA template below, what would be the...Ch. 15.2 - Prob. 2SBCh. 15.3 - Prob. 1SBCh. 15.3 - Prob. 2SBCh. 15.4 - Prob. 1SBCh. 15.4 - Distinguish between the P, A, and E sites of the...Ch. 15.4 - Prob. 3SBCh. 15.5 - How does a missense mutation differ from a silent...
Ch. 15.5 - Prob. 2SBCh. 15.5 - Prob. 3SBCh. 15.5 - Prob. 4SBCh. 15 - Eukaryotic mRNA: usessnRNPs to cut out introns and...Ch. 15 - A segment of a strand of DNA has a base sequence...Ch. 15 - Prob. 3TYKCh. 15 - Prob. 4TYKCh. 15 - Which of the following statements is false? a. GTP...Ch. 15 - Prob. 6TYKCh. 15 - Prob. 7TYKCh. 15 - Prob. 8TYKCh. 15 - Prob. 9TYKCh. 15 - A part of an mRNA molecule with the sequence 5-UGC...Ch. 15 - Discuss Concepts A mutation occurs that alters an...Ch. 15 - Discuss Concepts The normal form of a gene...Ch. 15 - Prob. 13TYKCh. 15 - Prob. 14TYKCh. 15 - Prob. 15TYKCh. 15 - Prob. 16TYKCh. 15 - Prob. 17TYKCh. 15 - Prob. 1ITD
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- Diagram generally how a mRNA that contains sequences corresponding to four (4) exons would be translated. How many domains would the protein that results from translation contain?arrow_forward_______ are removed from new mRNAs. a. Introns c. Poly-A tails b. Exons d. Amino acidsarrow_forwardSuppose you are studying two different mutations in a gene that codes for a protein. In the first, a nonsense mutation occurs near the beginning of the gene. In the second, a nonsense mutation occurs near the end of a gene. Which mutation is more likely to affect the proteins function? Why?arrow_forward
- Explain the importance of the reading frame of a proteincoding genearrow_forwardcentral dogma of molecular biology describe the flow of information in the cell.There are also exceptions to the central dogma. Which of the following examples is inconsistent with the flow of genetic information in the cell? a. from DNA to mRNA b.from mRNA to protien c.from protien to DNA d.from DNA to rRNA e. from DNA to tRNAarrow_forward(a) Write the sequence of the mRNA molecule synthesized from a DNA template strand having the following sequence:5'–ATCGTACCGTTA–3' (b) What amino acid sequence is encoded by the following base sequence of an mRNA molecule? Assume that the reading frame starts at the 5’ end.5'–UUGCCUAGUGAUUGGAUG–3! (c) What is the sequence of the polypeptide formed on addition of poly(UUAC) to a cell-free proteinsynthesizing system?arrow_forward
- Explain why cell biologists predicted that the genetic code would be based on a 3-base codon. (b) How did early cell biologists confirm it was a 3-base codon?arrow_forwardGeneticists 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_forwardWhat are the role of transcription proteins? Explain briefly at your own wordsarrow_forward
- a molecular geneticist hopes to find a gene in human liver cells that codes for an important blood-clotting protein. he knows that the nucleotide sequence of a small part of the gene is gtggactgaca. briefly explain how to obtain the desired gene answerarrow_forwardAccording to the adaptor hypothesis, is each of the following statements true or false? A. The sequence of anticodons in tRNA directly recognizes codon sequences in mRNA, with some room for wobble. B. The amino acid attached to the tRNA directly recognizes codon sequences in mRNA. C. The amino acid attached to the tRNA affects the binding of the tRNA to a codon sequence in mRNA.arrow_forwardThe Central Dogma in Molecular Biology starts with genes being specified in the DNA determining the genetic sequence in not only mRNA but also in the identification of amino acids, which will be subsequently translated into ___. What is in the blank?arrow_forward
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