Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 26.5, Problem 1CC
What is a molecular clock? What assumption underlies the use of a molecular clock?
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Would the rate of deleterious or beneficial mutations be a good molecular clock? Why or why not?
Chapter 26 Solutions
Campbell Biology
Ch. 26.1 - Prob. 1CCCh. 26.1 - Prob. 2CCCh. 26.1 - DRAW IT The bear family (Ursidae) is more closety...Ch. 26.2 - Decide whether each of the following pairs of...Ch. 26.2 - Prob. 2CCCh. 26.3 - Prob. 1CCCh. 26.3 - Prob. 2CCCh. 26.3 - WHAT IF? Draw a phylogenetic tree that includes...Ch. 26.4 - Explain how comparing proteins of two species can...Ch. 26.4 - WHAT IF? Suppose gene A is orthologous in species...
Ch. 26.4 - Prob. 3CCCh. 26.5 - What is a molecular clock? What assumption...Ch. 26.5 - Prob. 2CCCh. 26.6 - Why is the kingdom Monera no longer considered a...Ch. 26.6 - Prob. 2CCCh. 26.6 - MAKE CONNECTIONS Explain how the origin of...Ch. 26 - Humans and chimpanzees are sister species. Explain...Ch. 26 - Why is it necessary to distinguish homology from...Ch. 26 - Prob. 26.3CRCh. 26 - When reconstructing phylogenies, is it more useful...Ch. 26 - Prob. 26.5CRCh. 26 - Prob. 26.6CRCh. 26 - In a comparison of birds and mammals, the...Ch. 26 - To appiy parsimony to constructing a phylogenetic...Ch. 26 - VISUAL SKILLS In Figure 26.4, which similarly...Ch. 26 - Three living species X, Y, and Z share a common...Ch. 26 - Prob. 5TYUCh. 26 - If you were using cladistics to build a...Ch. 26 - VISUAL SKILLS The relative lengths of the frog and...Ch. 26 - EVOLUTION CONNECTION Darwin suggested looking at a...Ch. 26 - SCIENTIFIC INQUIRY DRAW IT (a) Draw a...Ch. 26 - WRITE ABOUT A THEME: INFORMATION In a Short essay...Ch. 26 - SYNTHESIZE YOUR KNOWLEDGE This West Indian manatee...
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- How do molecular biology explain the evolution of life?arrow_forwardWhich organism violates the central dogma of molecular biology?arrow_forwardWhat is the difference between the core genome and pan-genome? What might you infer if you compare two genera, one in which the size of the core genome and pan-genome are very similar, and one in which the core genome is much smaller than the pan-genome?arrow_forward
- What assumption underlies the use of genetic sequence differences between species as a molecular clock?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_forwardHow much data is the human genome?arrow_forward
- What is biological constraints ?arrow_forwarda) Describe of why someone would choose to write about wolves vs. dogs. Make an argument for why this topic is interesting. b) Write a short description of why someone would choose this paper below of comparative analysis of the blood transcriptomes between wolves. How does this paper relate to wolves vs. dogs? c) How can you tell that this is a primary research paper and not a review?arrow_forwardSuppose that a newly identified mutation in humans causes formation of tooth tissue in the nasal cavity. What class of developmental genes would you expect to be mutated in this case? O a) Gap genes O b) Maternal-effect genes c) Pair-rule genes O d) Binary switch genesarrow_forward
- True or false? a) The Cheetah and the Bobcat are equally related to the European Wild Cat. b) The Ocelot evolved before the Domestic Cat. c)The branch leading to the Ocelot became reproductively isolatedfrom the branch leading to the Domestic Cat before the branch leading to the Domestic Cat became reproductively isolated from the branch leading to the Asian Leopard Cat. d) The Leopard and the Ocelot are equally related to the Bobcat.arrow_forwardIn what order does the genetic information flow in living organisms? Choose all that are true. genetic information can be rewritten from protein to DNA genetic information can be translated from RNA to protein genetic information can be rewritten from DNA to RNA genetic information can be rewritten from protein to RNA genetic information can be rewritten from RNA to DNAarrow_forwardWhich of the following best describes the central dogma of molecular biology? O A) MRNA is transcribed into DNA, which is then translated into a protein B) DNA is translated into MRNA, which is then transcribed into a protein O C) DNA is transcribed into mRNA, which is then translated into a protein O D) MRNA is translated into DNA, which is then translated into a protein E) DNA is replicated into MRNA, which is then transcribed into a proteinarrow_forward
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