Imagine an island with a starting population of 100 individuals. 1 of those is infected with...
Imagine an island with a starting population of 100 individuals. 1 of those is infected with a deadly disease. Once infected, this disease will kill an individual in 4 days. Calculate the removal rate (γ), then using the removal rate, calculate what value of a will result in an epidemic.
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Imagine an island with a starting population of 100 individuals.
1 of those is infected with...
18. Imagine that coronavirus has a 0.002% incidence in the population. A test for the virus...
18. Imagine that coronavirus has a 0.002% incidence in the population. A test for the virus has a 0.001% false positive rate and no false negative rate (false positive rate means the chance that if an uninfected individual takes the test the test will falsely identify them as infected). If a random person takes the test and gets a positive result, what is the chance that they are infected? (Show your work to earn partial credit) (4 points) Now consider...
Imagine that you have discovered a new population of curly-tailed lizards established on an island after...
Imagine that you have discovered a new population of
curly-tailed lizards established on an island after immigrant
lizards have arrived from another island during a hurricane. No
lizards inhabited the island previously. You collect and tabulate
the genotype data below for the lactate dehydrogenase gene (Ldh)
for each of the individual lizards, numbered 1-10. Use the table to
answer the questions below. The allele frequency of the A is 0.45
and the allele frequency of a is 0.55
Is the...
Imagine that you have a sample of 2 chromosomes in the 2 island model of population structure. Each island has a size 10,000 diploid individuals. Assume that m=0.005. Calculate: (a) The probability of...
Imagine that you have a sample of 2 chromosomes in the 2 island model of population structure. Each island has a size 10,000 diploid individuals. Assume that m=0.005. Calculate: (a) The probability of a coalescent event occurring before a migration event if the 2 chromosomes are sampled from the same population. (b) The probability of a coalescent event occurring before a migration event if the 2 chromosomes are sampled from different populations. (c) The probability of a coalescent event occurring...
6. Imagine that Zika virus has a 1% incidence in the population. A test for the...
6. Imagine that Zika virus has a 1% incidence in the population. A test for the virus has a 3% false positive rate and no false negative rate. If someone takes the test and gets a positive result, what is the chance that they are infected? 7. Imagine that human papillomavirus has a 40% incidence among people 21-30 years of age. A test for the virus has a 50% false negative rate but no false positive rate. If you get...
PROJECT Modeling the Dynamics of Viral Infections A patient is infected with a virus that triples...
PROJECT Modeling the Dynamics of Viral Infections A patient is infected with a virus that triples its numbers every hour. The immune system eventually kicks in and reduces the replication rate by a factor of in addition to kill ing 500,000 virus particles per hour, but this doesn't happen until the viral load reaches two million copies. To combat the infection, the infected person receives hourly doses of an antiviral drug. This drug further reduces the replication rate, to a...
In a population of mice a particular locus has two alleles A1 (dominant) and A2 (recessive)....
In a population of mice a particular locus has two alleles A1 (dominant) and A2 (recessive). There are 126 A1A1, 167 A1A2 and 88 A2A2. Is this population in Hardy-Weinberg equilibrium (3 pts)? In a population of Gragons, there are 3151 A1A1, 1678 A1A2 and 2014 A2A2 individuals. If the environment changes so that the homozygous recessive genotype suffers a reduction of fitness where its fitness is now 0.73, but the other genotypes are unaffected, what will be the frequency...
PROJECT Modeling the Dynamics of Viral Infections Chris Bjarnberg/Science Source A patient is infected with a...
PROJECT Modeling the Dynamics of Viral Infections Chris Bjarnberg/Science Source A patient is infected with a virus that triples its numbers every hour. The immune system eventually kicks in and reduces the replication rate by a factor of in addition to kill- ing 500,000 virus particles per hour, but this doesn't happen until the viral load reaches two million copies. To combat the infection, the infected person receives hourly doses of an antiviral drug. This drug further reduces the replication...
Case study 2: Five patients in the town of Castle Rock (Population 1,026) came into the...
Case study 2: Five patients in the town of Castle Rock (Population 1,026) came into the hospital between late March and late August, complaining of muscle twitching in their arms, anxiety and lethargy. Following admission to the hospital on June 25", the first patient (Patient X) became comatose and subsequently died. Before Patient 1 died he said that he started to feel bad after his hiking trip to Arizona, where he also explored some bat caves. The other 4 patients...
Sampling results for 12 quadrats. Density (individuals/100 cm) Adults Juveniles 1 Quadrat Coordinates 2.8 7,9 7,4...
Sampling results for 12 quadrats. Density (individuals/100 cm) Adults Juveniles 1 Quadrat Coordinates 2.8 7,9 7,4 5.9 3,8 1 0 1 14 2 D 0 3 6 1 0 0 0 2 0 0 0 0 5 0 0 2,10 8,5 9.8 4,5 9,7 3,1 7,2 Average Density (individuals/100 cm Estimated Sample Size (N) 1 . Use these steps to calculate the population size (N): Calculate the average density per cell (10 cm x 10 cm square). Enter the average...
utilizing the hardy weinberg equation the dots have been counted, they are the numbers in red...
utilizing the hardy weinberg equation
the
dots have been counted, they are the numbers in red
We'll simulate selection using colored dots on projected slides. Imagine, in this simple case, the phenotypes represent incomplete dominance in which you can predict the genotype from the phenotype: red is AA, pink is Aa, and white is aa. Look at the first slide in the first environment. Note that some dots are harder to see than others and may be less subject to...
18. Imagine that coronavirus has a 0.002% incidence in the population. A test for the virus has a 0.001% false positive rate and no false negative rate (false positive rate means the chance that if an uninfected individual takes the test the test will falsely identify them as infected). If a random person takes the test and gets a positive result, what is the chance that they are infected? (Show your work to earn partial credit) (4 points) Now consider...
Imagine that you have discovered a new population of
curly-tailed lizards established on an island after immigrant
lizards have arrived from another island during a hurricane. No
lizards inhabited the island previously. You collect and tabulate
the genotype data below for the lactate dehydrogenase gene (Ldh)
for each of the individual lizards, numbered 1-10. Use the table to
answer the questions below. The allele frequency of the A is 0.45
and the allele frequency of a is 0.55
Is the...
6. Imagine that Zika virus has a 1% incidence in the population. A test for the virus has a 3% false positive rate and no false negative rate. If someone takes the test and gets a positive result, what is the chance that they are infected? 7. Imagine that human papillomavirus has a 40% incidence among people 21-30 years of age. A test for the virus has a 50% false negative rate but no false positive rate. If you get...
PROJECT Modeling the Dynamics of Viral Infections A patient is infected with a virus that triples its numbers every hour. The immune system eventually kicks in and reduces the replication rate by a factor of in addition to kill ing 500,000 virus particles per hour, but this doesn't happen until the viral load reaches two million copies. To combat the infection, the infected person receives hourly doses of an antiviral drug. This drug further reduces the replication rate, to a...
PROJECT Modeling the Dynamics of Viral Infections Chris Bjarnberg/Science Source A patient is infected with a virus that triples its numbers every hour. The immune system eventually kicks in and reduces the replication rate by a factor of in addition to kill- ing 500,000 virus particles per hour, but this doesn't happen until the viral load reaches two million copies. To combat the infection, the infected person receives hourly doses of an antiviral drug. This drug further reduces the replication...
Case study 2: Five patients in the town of Castle Rock (Population 1,026) came into the hospital between late March and late August, complaining of muscle twitching in their arms, anxiety and lethargy. Following admission to the hospital on June 25", the first patient (Patient X) became comatose and subsequently died. Before Patient 1 died he said that he started to feel bad after his hiking trip to Arizona, where he also explored some bat caves. The other 4 patients...
Sampling results for 12 quadrats. Density (individuals/100 cm) Adults Juveniles 1 Quadrat Coordinates 2.8 7,9 7,4 5.9 3,8 1 0 1 14 2 D 0 3 6 1 0 0 0 2 0 0 0 0 5 0 0 2,10 8,5 9.8 4,5 9,7 3,1 7,2 Average Density (individuals/100 cm Estimated Sample Size (N) 1 . Use these steps to calculate the population size (N): Calculate the average density per cell (10 cm x 10 cm square). Enter the average...
utilizing the hardy weinberg equation
the
dots have been counted, they are the numbers in red
We'll simulate selection using colored dots on projected slides. Imagine, in this simple case, the phenotypes represent incomplete dominance in which you can predict the genotype from the phenotype: red is AA, pink is Aa, and white is aa. Look at the first slide in the first environment. Note that some dots are harder to see than others and may be less subject to...
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