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of prey randomly acquires a mutation that happens to make them blend in more with their environment (i.e. become cryptic), then predators are going to have a harder time finding prey visually. Given how difficult predation is generally, most predators have evolved strategies to minimize their search when hunting. Therefore, prey individuals carrying this new cryptic mutation are more likely to avoid detection as predators focus on and eat relatively more of the individuals that stand out in their habitat. In this way, we can have differential survival and reproduction of prey individuals based on how their heritable phenotype varies in the population - in other words, natural selection can favor cryptic coloration in predator-filled environments. However, natural selection only 'sees' phenotypes, it does not act on organisms' genotypes directly. Therefore, to understand how a trait is going to evolve, we need to know something about the selective environment AND the genetic basis of that trait. In today's activity, we're going to simulate what happens to the frequency of a recessive mutation causing cryptic coloration in a newly created population of animals. In the past, there were two equally sized and geographically separated populations of animals evolving independently of one another. In one population, our cryptic mutation never occurred so that all individuals were uniformly dark-reddish (dark). In the second population, our cryptic mutation arose long ago such that everyone became light tan-colored. Due to climate change, the habitat of the first population has largely disappeared, although recent deforestation has created a suitable corridor allowing surviving individuals to migrate into the habitat of our previously separated second population. This fusion of two previously separate populations drastically changed the frequency of the cryptic mutation from 100% to 50% in this new much larger population. We will examine the population starting at this new intermediate frequency. 1. What term is used to describe migration of populations? Hint: one of the violations of Hardy- Weinberg.

of prey randomly acquires a mutation that happens to make them blend in more with their environment (i.e. become cryptic), then predators are going to have a harder time finding prey visually. Given how difficult predation is generally, most predators have evolved strategies to minimize their search when hunting. Therefore, prey individuals carrying this new cryptic mutation are more likely to avoid detection as predators focus on and eat relatively more of the individuals that stand out in their habitat. In this way, we can have differential survival and reproduction of prey individuals based on how their heritable phenotype varies in the population - in other words, natural selection can favor cryptic coloration in predator-filled environments. However, natural selection only 'sees' phenotypes, it does not act on organisms' genotypes directly. Therefore, to understand how a trait is going to evolve, we need to know something about the selective environment AND the genetic basis of that trait. In today's activity, we're going to simulate what happens to the frequency of a recessive mutation causing cryptic coloration in a newly created population of animals. In the past, there were two equally sized and geographically separated populations of animals evolving independently of one another. In one population, our cryptic mutation never occurred so that all individuals were uniformly dark-reddish (dark). In the second population, our cryptic mutation arose long ago such that everyone became light tan-colored. Due to climate change, the habitat of the first population has largely disappeared, although recent deforestation has created a suitable corridor allowing surviving individuals to migrate into the habitat of our previously separated second population. This fusion of two previously separate populations drastically changed the frequency of the cryptic mutation from 100% to 50% in this new much larger population. We will examine the population starting at this new intermediate frequency. 1. What term is used to describe migration of populations? Hint: one of the violations of Hardy- Weinberg.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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must DC auypt at sppottmg and Handng prey icIS tlat woUld TathoI Hot OC SCCH and CatCI. II a popuration of prey randomly acquires a mutation that happens to make them blend in more with their environment (i.e. become cryptic), then predators are going to have a harder time finding prey visually. Given how difficult predation is generally, most predators have evolved strategies to minimize their search when hunting. Therefore, prey individuals carrying this new cryptic mutation are more likely to avoid detection as predators focus on and eat relatively more of the individuals that stand out in their habitat. In this way, we can have differential survival and reproduction of prey individuals based on how their heritable phenotype varies in the population- in other words, natural selection can favor cryptic coloration in predator-filled environments. However, natural selection only 'sees' phenotypes, it does not act on organisms' genotypes directly. Therefore, to understand how a trait is going to evolve, we need to know something about the selective environment AND the genetic basis of that trait. In today's activity, we're going to simulate what happens to the frequency of a recessive mutation causing cryptic coloration in a newly created population of animals. In the past, there were two equally sized and geographically separated populations of animals evolving independently of one another. In one population, our cryptic mutation never occurred so that all individuals were uniformly dark-reddish (dark). In the second population, our cryptic mutation arose long ago such that everyone became light tan-colored. Due to climate change, the habitat of the first population has largely disappeared, although recent deforestation has created a suitable corridor allowing surviving individuals to migrate into the habitat of our previously separated second population. This fusion of two previously separate populations drastically changed the frequency of the cryptic mutation from 100% to 50% in this new much larger population. We will examine the population starting at this new intermediate frequency. 1. What term is used to describe migration of populations? Hint: one of the violations of Hardy- Weinberg.
Transcribed Image Text:must DC auypt at sppottmg and Handng prey icIS tlat woUld TathoI Hot OC SCCH and CatCI. II a popuration of prey randomly acquires a mutation that happens to make them blend in more with their environment (i.e. become cryptic), then predators are going to have a harder time finding prey visually. Given how difficult predation is generally, most predators have evolved strategies to minimize their search when hunting. Therefore, prey individuals carrying this new cryptic mutation are more likely to avoid detection as predators focus on and eat relatively more of the individuals that stand out in their habitat. In this way, we can have differential survival and reproduction of prey individuals based on how their heritable phenotype varies in the population- in other words, natural selection can favor cryptic coloration in predator-filled environments. However, natural selection only 'sees' phenotypes, it does not act on organisms' genotypes directly. Therefore, to understand how a trait is going to evolve, we need to know something about the selective environment AND the genetic basis of that trait. In today's activity, we're going to simulate what happens to the frequency of a recessive mutation causing cryptic coloration in a newly created population of animals. In the past, there were two equally sized and geographically separated populations of animals evolving independently of one another. In one population, our cryptic mutation never occurred so that all individuals were uniformly dark-reddish (dark). In the second population, our cryptic mutation arose long ago such that everyone became light tan-colored. Due to climate change, the habitat of the first population has largely disappeared, although recent deforestation has created a suitable corridor allowing surviving individuals to migrate into the habitat of our previously separated second population. This fusion of two previously separate populations drastically changed the frequency of the cryptic mutation from 100% to 50% in this new much larger population. We will examine the population starting at this new intermediate frequency. 1. What term is used to describe migration of populations? Hint: one of the violations of Hardy- Weinberg.
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