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Ch. 27 - Bacteria and Archaea
All textbooksCampbell 12th EditionCh. 27 - Bacteria and ArchaeaProblem 1
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Chapter 27, Problem 1

Genetic variation in bacterial populations cannot result from a. transduction. b. conjugation. c. mutation. d. meiosis.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Genetic Variation

Genetic variation refers to the diversity in gene frequencies among individuals within a population. It is essential for evolution and adaptation, as it provides the raw material for natural selection. In bacteria, genetic variation can arise through several mechanisms, allowing populations to adapt to changing environments.
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Mechanisms of Genetic Exchange

Bacteria can exchange genetic material through several mechanisms, including transduction (transfer via bacteriophages), conjugation (direct transfer between bacteria), and mutation (spontaneous changes in DNA). These processes contribute to genetic diversity, enabling bacteria to acquire new traits, such as antibiotic resistance.
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Meiosis in Eukaryotes

Meiosis is a specialized form of cell division that occurs in eukaryotic organisms, leading to the formation of gametes with half the chromosome number. Unlike bacteria, which reproduce asexually and do not undergo meiosis, this process is crucial for sexual reproduction and genetic recombination in multicellular organisms.
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Textbook Question

Photoautotrophs use a. light as an energy source and CO2 as a carbon source. b. light as an energy source and methane as a carbon source. c. N2 as an energy source and CO2 as a carbon source. d. CO2 as both an energy source and a carbon source.

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Textbook Question
Which of the following statements is true? (A)Archaea and bacteria have identical membrane lipids. (B)The cell walls of archaea lack peptidoglycan. (C)Prokaryotes have low levels of genetic diversity. (D)No archaea are capable of using CO2 to oxidize H2, releasing methane.
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Textbook Question

Which of the following statements is true?


a. Archaea and bacteria have identical membrane lipids.

b. The cell walls of archaea lack peptidoglycan.

c. Prokaryotes have low levels of genetic diversity.

d. No archaea are capable of using CO2 to oxidize H2, releasing methane.


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