CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
3rd Edition
ISBN: 9780136811206
Author: Urry
Publisher: SAVVAS L
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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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Chapter 23 Solutions
CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
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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- Evolution in Humans 1) explain how differences in gene expression of genetically similar organism can result in different evolutionary outcomes 2) describe the evolution of symbolic thought in humansarrow_forwardWhat is mutation? describe its type and how mutation and evolution are interrelated. Discussarrow_forward. a. If you found a zinc-finger domain (which facilitates DNA binding) in a newly identified gene,what kinds of hypotheses could you make aboutthe gene’s function?b. Suppose that this newly identified gene shares ahigh percentage of similarity throughout its lengthwith a previously characterized gene in the sameorganism. What does this fact suggest about the origin of the two genes? Would you categorize thesegenes as being: (i) homologous, (ii) paralogous, or(iii) orthologous? (More than one answer may apply.)arrow_forward
- Explain the neutral theory of molecular evolution (20%) and how you use it as a null hypothesis to detect positive selection in protein coding genes (20%)arrow_forwardQ1: Why is an insertion or a deletion in a gene more likely to alter the protein product than a substitution, such as A for C, would? Q2: Which would you expect to have more impact on an organism: a point mutation as shown here, or the insertion or deletion of a whole chromosome (discussed in Chapter 8)? Q3: Which mechanisms in a cell prevent mutations?arrow_forwardGive an example of a trait that may have evolved as a result of the handicap principle and explain your reasoning.arrow_forward
- Describe the relationship between mutations, genetic variation, natural selection, and evolution. Your description should include what a mutation is, which type of cells mutations must occur in to increase genetic variation, and how variation is required for natural selection.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_forwardDescribed in detail how DNA alterations can form the basis of genomic evolution. Explain the impact of natural selection in human evolution.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_forwardMAKE CONNECTIONS In Concept 20.2, you learnedabout genome-wide association studies. Explain howthese studies use the systems biology approach.arrow_forwardGenetics The Basque people, who have a distinct language, live on the coastal border of France and Spain. The 700,000 modern Basques had long been thought to descend from hunter-gatherers who lived in the area about 7,500 years ago, before the first farmers arrived. DNA told a different story. Researchers compared the genome sequences of bones from eight Basque farmers who had lived in a cave in northern Spain from 5,500 to 3,500 years ago to genomes from other skeletons representing several European hunter-gatherers and early farming groups, as well as to modern Europeans. While the ancient farmers had genomes representing many groups, including those of hunter-gatherers, the Basques indeed have a unique genome — but one that descends from the earliest farmers, not from hunter-gatherers. Apparently, their uniqueness today is due to their self-imposed isolation as the rest of Europe interbred Question: Until recently, the Basque people of Europe were thought to have descended…arrow_forward
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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY