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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Textbook Question
Chapter 23.3, Problem 3CC
MAKE CONNECTIONS Given that changes in morphology are often caused by changes in the regulation of gene expression, predict whether noncoding DNA is likely to be affected by natural selection. (Review Concepts 15.2 1 and 15.3 1.)
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Q1: If all genes are composed of just four nucleotides, how can different genes carry different types of information? Q2: Would you expect to see more variation in the sequence of DNA bases between two members of the same species (such as humans) or between two individuals of different species (for example, humans and chickens)? Explain your reasoning. Q3: Do different alleles of a gene have the same DNA sequence or different DNA sequences?
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Chapter 23 Solutions
Campbell Biology in Focus
Ch. 23.1 - Describe an example from the fossil record that...Ch. 23.1 - Your measurements indicate that a fossilized skull...Ch. 23.1 - WHAT IF? What might a fossil record of life today...Ch. 23.2 - Explain the consequences of plate tectonics for...Ch. 23.2 - Prob. 2CCCh. 23.2 - What factors promote adaptive radiations?Ch. 23.2 - Prob. 4CCCh. 23.3 - Explain how new body forms can originate by...Ch. 23.3 - Why is it likely that Hox genes have played a...Ch. 23.3 - MAKE CONNECTIONS Given that changes in morphology...
Ch. 23.4 - How can the Darwinian concept of descent with...Ch. 23.4 - Prob. 2CCCh. 23 - Which factor most likely caused animals and plants...Ch. 23 - Adaptive radiations can be a direct consequence of...Ch. 23 - A researcher discovers a fossil of what appears to...Ch. 23 - A genetic change that caused a certain Hox gene to...Ch. 23 - A swim bladder is a gas-filled sac that helps fish...Ch. 23 - SCIENTIFIC INQUIRY Herbivory (plant eating) has...Ch. 23 - FOCUS ON EVOLUTION Describe how gene flow, genetic...Ch. 23 - FOCUS ON ORGANIZATION You have seen many examples...Ch. 23 - SYNTHESIZE YOUR KNOWLEDGE In 2010, the Soufriere...
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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
- What is mutation? describe its type and how mutation and evolution are interrelated. Discussarrow_forwardTo determine: The ways by which the exon/intron structure of genes contributes to the generation of new gene functions during evolution.arrow_forwardA. What is the wild progenitor of maize and where is it found? B. George Beadle concluded that this plant was the likely ancestor of maize (corn) even though the two plants appear very different. What evidence did Dr. Beadle collect that led to his conclusion? C. How long ago was maize domesticated and what evidence was utilized to determine this? D. Dr. Doebley and his team compared the DNA sequence of maize to that of a number of teosinte varieties from throughout Mexico. What did their analysis reveal?arrow_forward
- 1. State the central dogma of molecular biology. 2. What are Chargaff's rules? 3. Identify the structure of the DNA molecule. 4. Describe transcription. 5. How may mRNA be modified before it leaves the nucleus? 6. What is the genetic code? What are codons? 7. Outline the steps of translation. 8. Define mutation and mutagen. 9. List three examples of mutagens. 10. Identify three types of chromosomal alterations.arrow_forwardDescribed in detail how DNA alterations can form the basis of genomic evolution. Explain the impact of natural selection in human evolution.arrow_forwardGive an example of a trait that may have evolved as a result of the handicap principle and explain your reasoning.arrow_forward
- Humans and chimpanzees share about 98% of their DNA. What is DNA? What might be the role of regulatory genes in producing the anatomical differences between these two lineages? Give two examples of how the field of genetics has revolutionized biological science. What is polymerase chain reaction (PCR) and why is it important in genetics?arrow_forwardWhat is a gene? Why are regulatory genes important to the evolutionary process? What is a mutation as defined in this course and readings. Are the end results of a mutation always "good" or always "bad"? Or is a mutation perhaps neither always good or always bad and could be "neutral or no effect" or "adaptive" in some situations? Does it depend on the gene, amino acid, protein, and case-by-case scenario? What genetic evidence suggests that humans are a part of a biological continuum with all life forms. Does the number of genes in a biological organism correlate, predict, or denote the complexity of the organism? Does the number of chromosomes in a biological organism correlate, predict, or denote the complexity of the organism?arrow_forward17. The effect sizes for the SNPS linked to performance on IQ tests are very very small. Why does that make it unlikely that we can genetically engineer humans with super high IQ? 18. True or False: Diseases such as type II diabetes and lung cancer are likely caused by mutations to a single gene. Explain your answer. 19. True or False: SNPS that are associated to disease using GWAS design should be immediately consid- ered for further molecular functional studies. Explain your answer.arrow_forward
- MAKE CONNECTIONS In Concept 20.2, you learnedabout genome-wide association studies. Explain howthese studies use the systems biology approach.arrow_forwardM2arrow_forwardThe existence of ubiquitous genes and proteins (performs the same function in all organisms) strongly support the theory that all life evolved from a common ancestor. With that in mind, what kind of genes might be evolutionarily conserved and universally found in bacteria, plants and animals? Select one: a. genes that code for the synthesis of ribosomes. b. genes that code for the enzymes of glucose metabolism c. genes that code for the synthesis DNA and RNA polymerase d. all of the above. Clear my choicearrow_forward
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