Campbell Biology
Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 25.6, Problem 2CC
Summary Introduction

To describe: An evolutionary trend that might occur in Myxoma virus or rabbit when a rabbit population has its first encounter with the virus.

Concept introduction: Myxoma virus is a lethal virus that kills 98.8% of European rabbits exposed to the virus for the first time. Myxoma virus is used as a biological agent against the rabbit population in many countries.

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Panthers are also susceptible to a respiratory infection [feline calicivirus].  Individuals in a population, who are homozygous dominant or heterozygous for genes encoding parasite or pathogen resistance, are more likely to resist an infection or parasite.  Currently, population estimates of the Florida panther range from 100 – 160 individuals.  Let’s assume that the population equals 160.  During a particularly bad calicivirus outbreak,   40 Florida panthers die as a result of the infection.  Using this information, answer the following questions utilizing the Hardy – Weinberg equation when necessary.     What is the most likely genotype of the affected panthers that died from the respiratory infection? Use the letter “A” for your symbol.         2. What percentage of the population is most likely resistant to the calicivirus infection?
Panthers are also susceptible to a respiratory infection [feline calicivirus].  Individuals in a population, who are homozygous dominant or heterozygous for genes encoding parasite or pathogen resistance, are more likely to resist an infection or parasite.  Currently, population estimates of the Florida panther range from 100 – 160 individuals.  Let’s assume that the population equals 160.  During a particularly bad calicivirus outbreak,   40 Florida panthers die as a result of the infection.  Using this information, answer the following questions utilizing the Hardy – Weinberg equation when necessary.  What is the most likely genotype of the affected panthers that died from the respiratory infection?  Use the letter “A” for your symbol.  What percentage of the population is most likely resistant to the calicivirus infection?  Using the information given for the inheritance of pathogen resistance, construct a Punnett square crossing a heterozygous individual to a homozygous…
Which evolutionary mechanisms (natural selection, mutation, genetic drift, or gene flow) would you need to understand to predict the success of  genetically modified mosquitoes to: 1. Drive the mosquito population to extinction? 2. Replace the mosquito population with genetically modified mosquitoes that can not transmit malaria?

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