CAMPBELL MASTERING BIOLOGY ACCESS>I<
18th Edition
ISBN: 9781323766286
Author: Pearson
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 3TYU
Two eukaryotic proteins have one domain in common but are otherwise very different. Which of the following processes is most likely to have contributed to this similarity?
- A. gene duplication
- B. alternative splicing
- C. exon shuffling
- D. random point mutations
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Students have asked these similar questions
If eukaryotes have monocistronic genes, why is the number of known proteins more than the number of known genes?
A. Post-translational modification
B. Alternative splicing
C. Base substitution
D. Post-transcriptional modification
How do we call the type of point mutation in which an A->U change occurs in the codon for the sixth amino acid in hemoglobin chain b? a) Inversion b) Transversion c) Transition d) Transamination
Which of the following mutations is likely to be the least harmful?
A. A +1 frameshift mutation
B. A +3 frameshift mutation
C. A - 5 frameshift mutation
D. A -1 frameshift mutation
E. A point mutation in the first position of the codon
Chapter 18 Solutions
CAMPBELL MASTERING BIOLOGY ACCESS>I<
Ch. 18.1 - Prob. 1CCCh. 18.2 - Prob. 1CCCh. 18.2 - Explain the advantage of the systems biology...Ch. 18.2 - Prob. 3CCCh. 18.3 - The best estimate is that the human genome...Ch. 18.3 - Prob. 2CCCh. 18.3 - Prob. 3CCCh. 18.4 - Discuss the characteristics of mammalian genomes...Ch. 18.4 - Which of the three mechanisms described in Figures...Ch. 18.4 - Prob. 3CC
Ch. 18.5 - Describe three examples of errors in cellular...Ch. 18.5 - Prob. 2CCCh. 18.5 - Prob. 3CCCh. 18.6 - Would you expect the genome of the macaque (a...Ch. 18.6 - Prob. 2CCCh. 18 - Prob. 1TYUCh. 18 - Prob. 2TYUCh. 18 - Two eukaryotic proteins have one domain in common...Ch. 18 - SCIENTIFIC INQUIRY The scientists mapping human...Ch. 18 - FOCUS ON EVOLUTION Genes important in the...Ch. 18 - FOCUS ON INFORMATION The continuity of life is...Ch. 18 - SYNTHESIZE YOUR KNOWLEDGE Insects have three...
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- Portions of eukaryotic mRNA sequence that are removed during RNA processing are . a. exons b. caps c. poly-A tails d. intronsarrow_forward_______ are removed from new mRNAs. a. Introns c. Poly-A tails b. Exons d. Amino acidsarrow_forwardIn Eukaryotes, DNA is a long molecule inside a tiny nucleus. a. How can this long chain fit in such space? b. How does it affect gene expression?arrow_forward
- Give two DIFFERENT examples of how the following can occur:a. A point mutation in an exon that is silent.b. A point mutation in an exon that is NOT silent.c. A point mutation in an intron that is NOT silent.d. A point mutation in a promoter that is NOT silent.arrow_forwardThe Human Genome Project resulted in the identification of 20,000 genes that code for proteins in humans. On average, each gene can code for 4 different proteins. Which of the following processes explains how a single gene could code for more than one protein? A) the central dogma of molecular biology B) mutations C) alternative splicing D) redundancy in the genetic code E) the fact that there are three stop codonsarrow_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 did the appearance of these hybridized strands provide evidence of the existence of introns in eukaryotic genes?arrow_forward
- 1. Translation a)Explain the role of ribosomes in the process of protein translation.b. Explain the role of tRNA molecules in protein translation.c. Define the following terms:1. codon 2. anticodon. Explain how a codon is used in the process of translation.arrow_forwardexplain why a mutation in the dna nucleotide sequence that corresponds to the 3rd nitrogen base in the mrna codon is not as serious as a mutation in the dna that corresponds to the first nitrogen base in the mrna codonarrow_forwardA researcher was mutating prokaryotic cells by inserting segments of DNA. In this way, she made the following mutation:Original TTGACAT 15 to 17 bp TATAATMutant TATAAT 15 to 17 bp TTGACATa. What does this sequence represent?b. What do you predict will be the effect of such a mutation? Explain.arrow_forward
- Which of the following mutations would be most likely to havea harmful effect on an organism?(A) a deletion of three nucleotides near the middle of a gene(B) a single nucleotide deletion in the middle of an intron(C) a single nucleotide deletion near the end of the codingsequence(D) a single nucleotide insertion downstream of, and close to,the start of the coding sequencearrow_forwardWhich of the following best describes tRNA? a. Provides the instructions for the amino acid sequence of a polypeptide b. Complexes with ribosomal proteins to form ribosomes c. Used for eukaryotic RNA processing d. Transports amino acids to ribosomes during translationarrow_forwardWhat is the name of the enzyme is responsible for transcribing the DNA sequence into mRNA? In your own words, explain what this enzyme does.arrow_forward
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