Evolutionary Analysis (5th Edition)
5th Edition
ISBN: 9780321616678
Author: Jon C. Herron, Scott Freeman
Publisher: PEARSON
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Chapter 5, Problem 3Q
Because you are studying different subjects, the diversity of knowledge among you and your classmates is larger now than it was at the beginning of the school year. What kind of variation is this? Could the diversity in knowledge serve as raw material for evolution of the campus population? Why or why not?
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You are asked to assess whether a population of endangered salamanders can adapt to warming climate in their preferred habitat. The salamanders vary at a locus that determines adaptation to temperature, and the warming climate creates selection favoring one of two alleles at that locus. Drawing on what you know about natural selection and genetic drift, what information would you need to know about the salamanders to determine whether the allele that improves their adaptation to warmer climates will become fixed in the population?
Strictly no plagiarism.
A ship was caught in a storm and landed on a small island in the middle of the South Pacific. For generations, no one encountered this small colony who, despite the odds, made a thriving settlement on their island. After many years, what characteristics would be unique about this island population?
a. The people would look very different from each other, and may have evolved some odd characteristics that aren't seen in other humans.
b. The people would look very different from each other, and may exhibit abnormally high occurrences of genetic diseases that are rare in the general human population.
c.The people would look very similar to each other, and may exhibit abnormally high occurrences of genetic diseases that are rare in the general human population.
d. The people would no longer be considered humans after evolving independently for several generations.
How do the rest of the vocabulary terms (the ones you didn't use below) apply to what you observed in the images?
Vocabulary terms: Natural Selection, Adaptation, Fitness, Genetic Diversity, Phenotype, Polymorphic, and Selective Pressure
Chapter 5 Solutions
Evolutionary Analysis (5th Edition)
Ch. 5 - What is the difference between genetic variation,...Ch. 5 - We noted on the first page of the chapter that...Ch. 5 - Because you are studying different subjects, the...Ch. 5 - What are reaction norms, and why do they matter?...Ch. 5 - Consider the nucleotide sequence TGACTAACGGCT....Ch. 5 - Consider a population containing the following...Ch. 5 - How many redheads live in a village of 250 people,...Ch. 5 - Diagram two processes through which genes can be...Ch. 5 - If a gene gets retroduplicated, how can you...Ch. 5 - How do chromosome inversions happen? What...
Ch. 5 - Diagram the sequence of events that leads to the...Ch. 5 - Discuss factors that might cause mutation rates to...Ch. 5 - Which kind of mutation is most common: lethal,...Ch. 5 - Compare and contrast the evolutionary roles of...Ch. 5 - Suppose a silent mutation occurs in an exon that...Ch. 5 - The amino acid sequences encoded by the red and...Ch. 5 - Chromosome number can evolve by smaller-scale...
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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
- Imagine a population of beetles living in someone's backyard. The beetles inhabit several different areas of the backyard, including the garden, patio, and storage shed. One day, the owners spray the garden with insecticide, killing off about half of the beetle population. What effect will this have on genetic variation and what evolutionary force is this an example of? Group of answer choices Reduces variation; genetic drift Increases variation; natural selection Reduces variation; natural selection Increases variation; genetic driftarrow_forwardI’m not sure which answer is an example of natural selection can you please help?arrow_forwardVoles of two different colors, brown and gray, live on the same island. Hawks find these voles to be their primary food source. The voles are distributed through grassy areas in the north of the island and across lava flows in the south part. Which of the following is predicted by natural selection? Hawks find the voles by movement so it won't matter. A vole population that starts as a random mixture will never adapt to the environment. Brown voles are good at hiding in the grass; gray voles are excellent at climbing over lava flows. Consequently, the vole distribution will reflect the ability of hawks to identify each of them in its natural environment. If they stay as a mixed population, they will remain mixed because the two varieties will not interbreed with each other. The hawk population will be skewed toward the north side of the islandarrow_forward
- Select the correct statement regarding evolution through genetic drift. Group of answer choices The evolution of a population occurs through a chance event that has nothing to do with the fitness of individuals. The evolution of a population occurs through competition for resources and survival of the fittest. The evolution of a population occurs only if sexual dimorphism (males and females look different from one another) exists between males and females. The evolution of a population occurs only if the population is very large.arrow_forwardHow can Darwin's finches explain natural selection and descent with modification? What is another example of natural selection and descent with modification? In both of your answers, you should describe the trait that was selected for/against and why this trait was an advantage/disadvantage. Plus, state how natural selection changed the population over time.arrow_forwardIn which of these examples can natural selection act on a trait and cause the population to evolve? A population that is faced with extinction but has no genetic variation A population where a lot of individuals have mutations, but none of the mutations relate to fitness A population with no genetic variation, but where individuals have very high numbers of offspring A population where a few individuals have mutations that allow them to develop traits for producing more offspring than other individualsarrow_forward
- What is an adaptation in the context of evolution? A heritable trait that was favored by natural selection. choose one of the following. A random genetic mutation that causes a new trait in a population. The ability of an individual to adjust to their environment as it changes..arrow_forwardIndicate whether each statement presents an idea of Jean-Baptiste Lamarck, of Charles Darwin, or of Both Scientistarrow_forwardWhat is the difference between genetic drift and natural selection? Genetic drift is the random increase or decrease of certain genes in a population; natural selection is not random. Genetic drift is the frequency of genes in a population; natural selection is the frequency of adaptations in a population. Genetic drift is the change in a population’s genes over time; natural selection is the evolution of a population over time. Genetic drift is the selection of random traits in a population; natural selection is the selection of specific traits.arrow_forward
- How would you expect a population to evolve differently in a complex, "patchy" (small, isolated and variable/different) environment compared to a simple, homogeneous one? What traits do you think might be beneficial in one type of environment but not the other?arrow_forwardIn experiment of genetic drift, suppose you have a population of 300 butterflies. if the population experiences a net growth of 12% in the following year, how many butterflies do you have? Now supposed you have 300 eggs, but only 70% of those eggs become caterpillars, and only 80% of the caterpillars become adult butterflies. How many butterflies do you have? (For simplicity, assume that all butterflies survive to the next year in this example.)arrow_forwardA farmer uses DDT to kill insects in his field. The first year nearly all of the insects were killed. By the fourth year, however, nearly all of the insects survived the DDT treatment. Explain the process of natural selection in this population of insects. Include these words - mutation, phenotype, variation, resistance, adaptation, and differential survival.arrow_forward
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