Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433769
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
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Chapter 24.3, Problem 1CC
Although rare on a per gene basis, new mutations can add considerable
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Various strains of bacteria are able to transfer genes to eukaryotic hosts. This process of horizontal gene transfer often results in the formation of enzymes in the host organism that assist in metabolic pathways.
Which of the following is the most likely explanation for why bacterial genes are able to successfully transfer genes that produce enzymes in eukaryotic cells?
A - Bacteria and Eukarya have similar mechanisms for the formation and use of enzymes in metabolic processes.
B - Bacteria and Eukarya use the same enzymes in all of their metabolic processes so the genes are interchangeable.
C - Bacteria and Eukarya share similar reproductive mechanisms so the cells reproduce without recognizing foreign DNA.
D - Bacteria and Eukarya have the same mechanism for replicating DNA so genes can easily be transferred between the two types of cells.
Various strains of bacteria are able to transfer genes to eukaryotic hosts. This process of
horizontal gene transfer often results in the formation of enzymes in the host organism that
assist in metabolic pathways.
Which of the following is the most likely explanation for why bacterial genes are able to
successfully transfer genes that produce enzymes in eukaryotic cells?
Bacteria and Eukarya have similar mechanisms for the formation and use of enzymes in
metabolic processes.
Bacteria and Eukarya use the same enzymes in all of their metabolic processes so the genes
are interchangeable.
Bacteria and Eukarya share similar reproductive mechanisms so the cells reproduce without
recognizing foreign DNA.
Bacteria and Eukarya have the same mechanism for replicating DNA so genes can easily be
transferred between the two types of cells.
In eukaryotes, sexual reproduction is the main process by which new gene combinations are generated. How do bacteria generate new gene combinations in the absence of sexual reproduction?
Chapter 24 Solutions
Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
Ch. 24.1 - What hypothesis did Miller test in his classic...Ch. 24.1 - How would the appearance of protocells have...Ch. 24.1 - Prob. 3CCCh. 24.1 - Prob. 4CCCh. 24.2 - Contrast the cellular and DNA structures of...Ch. 24.2 - Distinguish between the four major modes of...Ch. 24.2 - Prob. 3CCCh. 24.2 - Prob. 4CCCh. 24.3 - Although rare on a per gene basis, new mutations...Ch. 24.3 - Distinguish between the three mechanisms by which...
Ch. 24.3 - In a rapidly changing environment, which bacterial...Ch. 24.3 - WHAT IF? If a nonpathogenic bacterium were to...Ch. 24.4 - Explain how molecular systematics and metagenomics...Ch. 24.4 - WHAT IF? What would the discovery of a bacterial...Ch. 24.5 - Explain how prokaryotes, though small, can be...Ch. 24.5 - Prob. 2CCCh. 24.5 - Prob. 3CCCh. 24.5 - Prob. 4CCCh. 24 - Which of the following steps has not yet been...Ch. 24 - Fossilized stromatolites A. more than 2.8 billion...Ch. 24 - Prob. 3TYUCh. 24 - Photoautotrophs use A. light as an energy source...Ch. 24 - Which of the following statements is not true? A....Ch. 24 - Prob. 6TYUCh. 24 - Plantlike photosynthesis that releases O2 occurs...Ch. 24 - SCIENTIFIC INQUIRY INTERPRET THE DATA The...Ch. 24 - FOCUS ON EVOLUTION In patients infected with...Ch. 24 - FOCUS ON ENERGY AND MATTER In a short essay (about...Ch. 24 - Prob. 11TYU
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In prokaryotic cells with the largest genomes, which genecategory contains the largest percentage of genes?arrow_forwardWhen an Avidian (with a genome size of 50 sites) reproduces with a 10% per site mutation rate, and if the number of mutations per genome is Poisson distributed, then what is the most likely outcome? Possible answers: 4 per genome is most likely, 5 per genome is most likely, 4 mutations per genome and 5 mutations per genome are equally likely, A number other than 4 and/or 5 mutations per genome is most likelyarrow_forwardFor bacteria living in a rapidly changing environment, would a population of bacteria capable of conjugation be more successful than one that could not undergo conjugation? Explain why. Include in your answer a description of the process of conjugation and its advantages over other mechanisms of DNA transfer between prokaryotic organisms.arrow_forward
- Discuss the following statement: “mobile genetic elements are parasites. They are harmful to the host organism and therefore place it at an evolutionary disadvantage.”arrow_forwardWhich of the following correctly lists mutation types in order from least likely to affect an organisms phenotype to most likely to affect its phenotype 1.) nonsense mutation; missense mutation; point substitution in an intron; chromosomal duplication 2.) point substitution in an intron; missense mutation; framshift mutation; chromosomal duplication 3.) point substitution in an intron; frameshift mutation; missense mutation; chromosomal duplication 4.) missense mutation; frameshift mutation; point substitution in an intron; chromosomal duplicationarrow_forwardWhy is it easier to identify spontaneous mutations in bacteria than in most eukaryotes? The mutations occur at a much higher frequency. Because bacteria have smaller genomes. The mutations can be induced via exposure to the bacteriophage. The mutations are expressed directly in descendant cells because bacteria are haploid. The mutations are visible as color changes within a bacterial colony.arrow_forward
- Explain the important differences in gene structure and expression between prokaryotes and eukaryotes.arrow_forwardDetermine which of the genomic traits are associated with prokaryotes or eukaryotes. These traits include relative genome size. number of genes, gene density, and number of exons. Prokaryote about one gene every 2000 to 100000 bp relatively large, variable size genome multiple introns Answer Bank relatively small genome about one gene every 1000 bp 500 to 7000 genes Eukaryote 6000 to 30000 genes few, if any, intronsarrow_forwardWhat is horizontal gene transfer and how can this process potentially change how we view relatedness among the three Domains? Provide an example of a species with characteristics that results from horizontal gene transfer.arrow_forward
- See the hypothetical pathway answer the following questions. A) If an individual is homozygous for a null mutation in the gene that codes for Enz1, what would the result be? B) What would happen if an individual is heterozygous for a mutation that abolishes the activity of Enz2? C) What could happen to the offspring of the individuals described above (in a and b)? Assume that they only have the mutations described.arrow_forwardNine rII− mutants of bacteriophage T4 were used inpairwise infections of E. coli K(λ) hosts. Six of themutations in these phages are point mutations; theother three are deletions. The ability of the doubly infected cells to produce progeny phages in large numbers is scored in the following chart.1 2 3 4 5 6 7 8 91 − − + + − − − + +2 − + + − − − + +3 − − + − + − −4 − + − + − −5 − − − + +6 − − − −7 − + +8 − −9 −The same nine mutants were then used in pairwise infections of E. coli B hosts. The production of progenyphages that can subsequently lyse E. coli K(λ) hosts isnow scored. In the table, 0 means the progeny do notproduce any plaques on E. coli K(λ) cells; − meansthat only a very few progeny phages produce plaques;and + means that many progeny produce plaques(more than 10 times as many as in the − cases).1 2 3 4 5 6 7 8 91 − + + + + − − + +2 − + + + + − + +3 0 − + 0 + + −4 − + − + + +5 − + − + +6 0 0 − +7 0 + +8 − +9 −a. Which of the mutants are the three deletions? Whatcriteria did…arrow_forwardThe use of nucleotide sequence data to measure genetic variability is complicated by the fact that the genes of higher eukaryotes are complex in organization and contain 5′ and 3′ flanking regions as well as introns. Researchers have compared the nucleotide sequence of two cloned alleles of the g-globin gene from a single individual and found a variation of 1 percent. Those differences include 13 substitutions of one nucleotide for another and 3 short DNA segments that have been inserted in one allele or deleted in the other. None of the changes takes place in the gene’s exons (coding regions). Why do you think this is so, and should it change our concept of genetic variation?arrow_forward
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