Bio 121 Campbell Biology Truman College
17th Edition
ISBN: 9781323670637
Author: Urry, Cain
Publisher: PEARSON
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Chapter 21, Problem 3TYU
Summary Introduction
Introduction: “Gene duplication” is the phenomenon of the occurrence of more than one copy of the genes in the genome of the organisms like the alpha and the beta globin gene family. It takes place in the genome due to the presence of the transposable genes inserted in the chromosomes. This causes the development of the formation of the unequal crossing of the chromosomes.
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Students have asked these similar questions
Two eukaryotic proteins have one domain in common but areotherwise very different. Which of the following processes ismost likely to have contributed to this similarity?(A) gene duplication(B) alternative splicing(C) exon shuffling(D) random point mutations
If the codon AAA is mutated to AAG, it still codes for the amino acid, lysine, and the
protein remains functionally the same; which of the following would best describe
the result of this mutation?
1) frameshift mutation.
O 2) insertion mutation.
O 3) silent mutation.
4)
nonsense mutation.
O 5) back mutation.
If you were to hybridize a eukaryotic gene to its corresponding mRNA, the two molecules would not perfectly align. Why would it not?
A) Exons contained in the gene have been removed from the mRNA via splicing.B) RNA polymerase adds introns to the mRNAC) Introns contained in the gene have been removed from the mRNA via splicing.D) RNA polymerase adds exons to the mRNA
Chapter 21 Solutions
Bio 121 Campbell Biology Truman College
Ch. 21.1 - Describe the whole-genome shotgun approach.Ch. 21.2 - Prob. 1CCCh. 21.2 - Explain the advantage of the systems biology...Ch. 21.2 - MAKE CONNECTIONS The ENCODE pilot project found...Ch. 21.2 - MAKE CONNECTIONS In Concept 20.2, you learned...Ch. 21.3 - The best estimate is that the human genome...Ch. 21.3 - The Genomes Online Database (GOLD) Website of the...Ch. 21.3 - WHAT IF? What evolutionary processes might...Ch. 21.4 - Discuss the characteristics of mammalian genomes...Ch. 21.4 - VISUAL SKILLS Which of the three mechanisms...
Ch. 21.4 - Contrast the organizations of the rRNA gene family...Ch. 21.4 - MAKE CONNECTIONS Assign each DNA segment at the...Ch. 21.5 - Describe three examples of errors in cellular...Ch. 21.5 - Explain how multiple exons might have arisen in...Ch. 21.5 - What are three ways that transposable elements are...Ch. 21.5 - WHAT IF? In 2005, Icelandic scientists reported...Ch. 21 - How did the Human Genome Project result in more...Ch. 21 - What has been the most significant finding of the...Ch. 21 - Compare genome size, gene number, and gene density...Ch. 21 - Explain how the function of transposable elements...Ch. 21 - How could chromosomal rearrangements lead to the...Ch. 21 - What type of Information can be obtained by...Ch. 21 - Bioinformatics intludes all of the following...Ch. 21 - Homeotic genes (A) encode transcription factors...Ch. 21 - Prob. 3TYUCh. 21 - DRAW IT Below are the amino acid sequences(using...Ch. 21 - EVOLUTION CONNECTION Genes important in the...Ch. 21 - scientific inquiry The scientists mapping the SNPs...Ch. 21 - Prob. 7TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE Insects have three...
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- Process by which the DNA sequences encoding exons are exchanged and reordered through genetic recombination between DNA sequences encoding introns. Group of answer choices a)RNA editing b)Exon Definition c) Exon Shuffling d)Transesterificationarrow_forwardTranscription and translation are separate processes in gene expression; however, they have similarities. The following terms all relate to translation. Which of these has a role that is most similar to that of the transcription start site during transcription? A)Start codon B)Stop codon C)tRNA D)Amino acidarrow_forwardGene splicing all are true except - a) Complete removal of introns b) Histone mRNAs do not undergo splicing c) SnRNAs help in splicing d) Prokaryotic mRNAs do not undergo splicingarrow_forward
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- Explain (in one or two lines) the function of the followings:(a) Promoter(b) tRNA(c) Exonsarrow_forwardChloramphenicol blocks the peptidyl transferase reaction on ribosomes. The specific effect of this compound would be to ... A) inhibit transcription B) prevent peptide bond formation C) block the translocation steps in translation D) prevent entry of aminoacyl TRNAS into the A site E) prevent recognition of the promoter sequences by sigma factorarrow_forwardThe genetic code is thought to have evolved to maximize genetic stability by minimizing the effect on protein function of most substitution mutations (single-base changes). We will use the six arginine codons to test this idea. Consider all of the substitutions that could affect all of the six arginine codons.(a) How many total mutations are possible?(b) How many of these mutations are “silent,” in the sense that the mutantcodon is changed to another Arg codon?(c) How many of these mutations are conservative, in the sense that an Argcodon is changed to a functionally similar Lys codon?arrow_forward
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