BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 54, Problem 1S
Refer to figure 55.8. What are the implications for evolutionary divergence among populations that are pan of a metapopulation versus populations that are independent of other populations?
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What are examples for gene flow? Select all that apply
A distinct population of iguana drift to a new island that is already inhabited by members
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. Examining how populations lead to new lineages that arise based on alterations to allelic frequency and gametic exchange of new alleles is investigating ________________
a) macroevolution
b) microevolution
c) community ecology
d) ecological species concept
2. Is this population evolving? 100 hawks, 2 alleles for eye color green to blue EyeG EyeG, EyeGEyeB, EyeB EyeB ; 20 EGEG, 70 EGEB , 10 EBEB
A yes
B no
C not enough information to calculate this
According to the Hardy-Weinberg law of equilibrium:
Question 1 options:
A)
In absence of mutation and natural selection, the frequencies of the genotypes will remain stable because no evolutionary change takes place.
B)
In absence of gene flow, the frequencies of the genotypes will remain stable because no evolutionary change takes place.
C)
In absence of genetic drift, the frequencies of the genotypes will remain stable because no evolutionary change takes place.
D)
All of the above.
E)
None of the above.
Chapter 54 Solutions
BIOLOGY
Ch. 54.1 - Prob. 1LOCh. 54.1 - Prob. 2LOCh. 54.1 - Explain how species adapt to environmental...Ch. 54.2 - Prob. 1LOCh. 54.2 - Prob. 2LOCh. 54.3 - Prob. 1LOCh. 54.3 - Prob. 2LOCh. 54.3 - Prob. 3LOCh. 54.4 - Prob. 1LOCh. 54.4 - Prob. 2LO
Ch. 54.5 - Prob. 1LOCh. 54.5 - Discuss why populations cannot grow exponentially...Ch. 54.5 - Define carrying capacity and explain what might...Ch. 54.6 - Prob. 1LOCh. 54.6 - Prob. 2LOCh. 54.6 - Prob. 3LOCh. 54.7 - Prob. 1LOCh. 54.7 - Prob. 2LOCh. 54.7 - Prob. 3LOCh. 54 - Prob. 1DACh. 54 - Prob. 2DACh. 54 - Prob. 3DACh. 54 - Prob. 4DACh. 54 - Prob. 5DACh. 54 - Prob. 6DACh. 54 - Prob. 1IQCh. 54 - Prob. 2IQCh. 54 - Prob. 3IQCh. 54 - Prob. 4IQCh. 54 - Prob. 5IQCh. 54 - Prob. 6IQCh. 54 - Prob. 7IQCh. 54 - Prob. 8IQCh. 54 - Suppose experimenters artificially kept the hare...Ch. 54 - Prob. 10IQCh. 54 - Prob. 11IQCh. 54 - Prob. 12IQCh. 54 - Source-sink metapopulations are distinct from...Ch. 54 - The potential for social interactions among...Ch. 54 - When ecologists talk about the cost of...Ch. 54 - Prob. 4UCh. 54 - The difference between exponential and logistic...Ch. 54 - Prob. 6UCh. 54 - Which of the following is an example of a...Ch. 54 - If the size of a population is reduced due to a...Ch. 54 - In populations subjected to high levels of...Ch. 54 - In a population in which individuals are uniformly...Ch. 54 - Prob. 4ACh. 54 - Refer to figure 55.8. What are the implications...Ch. 54 - Prob. 2SCh. 54 - Refer to figure 55.14. Because the number of...Ch. 54 - Refer to figure 55.26. Would increasing the mean...
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- 21) ALL BUT ONE of the statements below helps to describe gene flow. That is A) B) Without genetic variation, some of the basic mechanisms of evolutionary change cannot operate. There are three primary sources of genetic variation: 1. Mutations II. Gene flow III. Sexual reproduction D) It depends on a chance event that changes the gene pool. It can reduce the genetic differentiation between the two groups. It involves the movement of alleles from one population to another. It includes migration or the movement of individuals between populations. Some mutations always occur from generation to generation. But most mutations do not persist over time in the gene pool. Which mutation is MOST likely to become established and persist in a species?arrow_forwardWhich of the following statements about sympatric speciation is correct? It is a process through which two populations can diverge and develop reproductive isolation while in two different geographic area. It is the most common mechanism for populations to form independent species. Postzygotic isolation is the main form of reproductive isolation for the sympatric speciation process. Genetic isolation through large scale chromosomal mutations, such as chromosome inversion or polyploidy, are more likely contributing to sympatric speciation. None of the abovearrow_forwardWhich of the following is TRUE in a population in Hardy-Weinberg equilibrium? a) The genotype that has the greatest selective advantage (i.e. evolutionary benefit) will increase in frequency over generations. O b) The genotype and allele frequency will remain nearly constant over generations. O c) The rate of mutation and the rate of migration are roughly equal. O d) The population will drastically decrease in size as the result of a bottleneck event.arrow_forward
- would the heritability of human height in native Hawaiians different from the height of Lithuanians? 1) no since both of them are in different racial groups 2) yes since the genetic diversity and the environment influences are different in both groups 3) yes, the sample size in the study is not the same 4) no because heritability is homogenous across all subpopulations.arrow_forwardFrom the below examples, all except 1 describe cases where a population would have evolved. Which of the following is the only case that does NOT describe a situation where the population is evolving? When individuals with a certain genotype have moved away from the population living in a particular area When individuals with certain genotypes have had more babies because their genotype is better adapted to the environment When individuals with a certain genotype have experienced phenotypic plasticity in an environment that changed in the area that they live in When individuals with a certain genotype were killed off by lightningarrow_forwardUse each of the following species concepts to write a claim about whether the dark and light fur mice are, in fact, different species. Your claim should demonstrate your understanding of that particular species concept. Mice with light coat colors are found in populations scattered across the southeastern US. Researchers believe the light coat color emerged in a single population. How would a biologist explain the evolution of the light coat color in populations across the southeastern US? Briefly explain your reasoning.arrow_forward
- Over time, enough genetic variations can develop within a population to cause it to undergo speciation. Identify the various mechanisms that will prevent different species from being able to reproduce successfully. Which of these mechanisms is the most influential in keeping species sperate?arrow_forwardWhich of the following is TRUE in a population in Hardy-Weinberg equilibrium? O a) The population will drastically decrease in size as a result of a bottleneck event. O b) The recessive allele will decrease in frequency over generations until it disappears. c) The genotype that has the greatest selective advantage (i.e. evolutionary benefit) will increase in frequency over generations. d) The rate of mutation and the rate of migration are roughly equal. O e) The genotype and allele frequency will remain nearly constant over generations.arrow_forwardIn the experiment of stochastic events, what observations can you make regarding the gene pool and gene frequency of the founding individuals? What observations can you make about the genetic variation between the parent and founding populations? How does the source of the founding population (beaker 1 or beaker 2) influences these results? how will future generations from beaker 3 differ from those of their parent population?arrow_forward
- Much attention is given to the existence of genetic variation in populations.Why do evolutionary biologists give so much attention to this? Explain mechanisms thatgenerate genetic variation in populations. Explain mechanisms that maintain geneticvariation in populations. Provide examples and dataarrow_forwardExplain the difference in outcrossing rate between “control”, “evolution” and “coevolution” populations in Figure 1. What do these treatments correspond to? Do these data match the predictions of the Red Queen hypothesis?arrow_forwardConsider the following example. In Alaska, different individuals of foxes can be brown, white, grey or black. In 2018, the population was 25% brown fur, 25% white fur, 25% grey fur and 25% black fur. The polar vortex in 2019 killed many of the foxes. When scientists measured the frequencies of foxes in 2023, they found that 50% were brown, 25% were white and 25% were black. Which force of evolution has occurred? A. Founder Effect B. Gene Flow C. Population Bottleneck D. Mutationarrow_forward
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