Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 1, Problem 10TYU
FOCUS ON INFORMATION
A typical prokaryotic cell has about 3,000 genes in its DNA while a human cell has almost 21,000 genes About 1000 of these genes are present in both types of cells. (a) Based on your understanding of evolution explain how such different organisms could have this same subset of 1,000 genes. (b) What sorts of functions might these shared genes have? Justify your choices
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Chapter 1 Solutions
Campbell Biology in Focus
Ch. 1.1 - Starting with the molecular level in Figure 1.3,...Ch. 1.1 - Identify me theme or themes exemplified by (a) the...Ch. 1.1 - WHAT IF? For each theme discussed in this section...Ch. 1.2 - How is a mailing address analogous to biologys...Ch. 1.2 - Explain why editing is an appropriate metaphor for...Ch. 1.2 - DRAW IT Recent evidence indicates that fungi and...Ch. 1.3 - Contrast inductive reasoning with deductive...Ch. 1.3 - What qualitative observation led to the...Ch. 1.3 - Why is natural selection called a theory?Ch. 1.3 - How does science differ from technology?
Ch. 1 - All the organisms on your campus make up A. an...Ch. 1 - Which of the following best demonstrates the unity...Ch. 1 - Prob. 3TYUCh. 1 - Prob. 4TYUCh. 1 - Which of the following best describes the logic of...Ch. 1 - DRAW IT With rough sketches, draw a biological...Ch. 1 - SCIENTIFIC INQUIRY Based on the results of the...Ch. 1 - Prob. 8TYUCh. 1 - FOCUS ON EVOLUTION In a short essay (100-150),...Ch. 1 - FOCUS ON INFORMATION A typical prokaryotic cell...Ch. 1 - SYNTHESI7F YOUR KNOWLEDGE Can you pick out the...
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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
- Genetic diversity 1. Why do multicellular organisms have two copies (alleles) of any given gene? 2. What genotype(s) will result in a dominant phenotype, and why? 3. What genotypes(s) will result in a recessive phenotype, and why? 4. What do mean by the “gene pool” of a population? And why is this such an important concept inunderstanding how evolution works on small scales?5. If p = 0.75, what does q equal? And how do you know this? 6. What does it mean to say that a population has been become “fixed” for a particular trait? Whatvalues for p or q tell us that fixation has occurred? 7. Ultimately, why are we concerned about the loss of genetic diversity (i.e., fixation)? 8. Contrast natural selection with genetic drift. Which one is always adaptive? Explain your answer. 9. What’s the bottleneck effect? Describe some examples of organisms that have experienced this &what caused it to occur. 10. How can gene flow help to restore variation that may have been lost through bottleneck…arrow_forwardDarwin and the Theory of Evolution - V2 So how and why did Charles Darwin come to develop his ground-breaking Theory of Evolution? In Darwin's lifetime the Christian biblical idea that about 6,000 years ago god created all the species exactly as we see them, was the accepted belief. When he was only 22, Darwin was the naturalist on the HMS Beagle. He voyaged around the world for 5 years, with numerous long stops to and observe. These observations lead him to conclude that Biblical stories could Darwin made many that caused him to ask key Some that he later used to support the Theory of Evolution included: Darwin's 5 Observations Key Questions 1. Rodents in South America and were very from Why are similar organisms clustered in the same regions? European rodents. 2. The Why are similar living and fossilized glyptodont looked like a armadillo. organisms found in the same region? 3. The tortoises, finches and plants on the looked like the nearest Why did island organisms look like those…arrow_forwardAsian tiger mosquito Trace its origin and evolutionary history or changes in the species. Describe its structures and their functions. What is the importance of this species to our environment? Give trivia about this species. Does this organism produce oxygen? Explain. What are the ancestral species of your chosen organism? Has this species been genetically engineered? If yes, in what way? How does this species reproduce? What organisms have similar structures to this species? Do these structures have the same function? Does the species have tissues, organs, and/or organ systems? What is its role in the flow of energy? Give at 15 least a sentence to each question.arrow_forward
- Genetics Question 15arrow_forwardExtinct Threatened 4-A comparison of DNA or protein sequences from different species can reveal evolutionary relationships. This assumption is based on the idea that the nucleotide or amino acid sequence of a particular gene or the protein it encodes, respectively, mutates at a similar rate in different individuals. However, remember that the rate of mutation alone does not determine how fast a DNA sequence will change. The effects of mutation on survival and reproductive success (natural selection), as well as the generation time of the organism, also play important roles in the overall rate of genetic change in a population. VOLENT Vulnerable (UCN 3.1 EX EW CR EN Why might a non-coding region of DNA be more reliable than a gene like Leptin for building phylogenies? (9)arrow_forwardThe Selfish Gene is a radical theory that argues that all living creatures are essentially vehicles for their genes- hence, we all are a “survival machine" for our genes. In the light of what you have learned about the molecular structure and function of the gene, is this perspective still relevant? Cite specific biological phenomena to prove your point. References:arrow_forward
- The fact that we find histones in Eukarya and Archaea is most likely to indicate indicate what? O A. Histones evolved prior to Archaea and Eukarya branching off from Bacteria B. Histones evolved after Archaea and Eukarya branched off from Bacteria • C. Histones are found only in multicellular organisms • D. Histones are necessary to protect DNA from nucleases O E. Histones are a product of convergent evolutionarrow_forwardA CRISPR locus in a bacterium contains (a) short repeated sequences (b) short DNA sequences homologous to bacteriophages (c) genes that encode guide RNAs and one or more proteins (d) a, b, and c (e) none of the precedingarrow_forwardExplain why the answer is correct. For eukaryote cells to evolve into new types of eukaryotic organisms, which of the following would one expect to occur? The correct answer is E a) these cells have evolved because they have different DNA because of mutations b) Their endoplasmic reticulum is synthesizing new and/or different proteins. c) These specialized cells activate new genes to synthesize new proteins. d) these organisms have new characteristics because they have acquired new genes. e) all of these are truearrow_forward
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