The Analysis of Biological Data
2nd Edition
ISBN: 9781936221486
Author: Michael C. Whitlock, Dolph Schluter
Publisher: W. H. Freeman
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Chapter 8, Problem 3PP
(a)
To determine
To calculate the
(b)
To determine
To give two other values for the proportion that are also consistent with the data.
(c)
To determine
To test the genetic hypothesis and explain are the results compatible with your findings in part (a).
(d)
To determine
To explain is it correct to conclude that a single gene in Daphnia magna underlies resistance to the bacterium.
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The viruses causing problems in strawberry plants are mainly spread by one insect, the strawberry aphid. Carly believes that as aphids feed on leaves, they transmit viruses that can cause a rapid decrease in plant growth. She decides to verify whether or not the number of strawberry aphids found on a plant could be linked to its growth. She therefore randomly chooses 5 strawberry plants at the same stage of development in a virus-infested garden. For each individual plant, she first collects all the aphids present on the plant and weighs them, and then weighs the entire plant to have a measure of plant growth. She obtains the following data. (Attach on side)
Is Carly correct in thinking that when the number of aphids on a plant is larger, the growth of the plant is affected (i.e., its weight is smaller)? Apply the appropriate statistical method with a test of significance at α = 0.05.
The coat color of black bears depends on a gene with two alleles. Allele B is dominant and confers black coat, whereas allele b is recessive and homozygous bears have white coats (albino black bears, I know it sounds weird but it is true). As we know from genetics each bear has two alleles and the coat colors are as follows:
BB-black; Bb-black; bb-white.
A researcher obtained the following data for the genotypes (BB, Bb or bb) of black bears:
Genotype
Number of bears
BB
42
Bb
24
bb
21
You are performing the following hypothesis test:
H0: The genotypes of the bears follow a binomial distribution, with a probability of receiving the b allele equal to the observed proportion of the b allele in the population.
HA: The genotypes of the bears do not follow a binomial distribution
What is the expected frequency of bears with genotype BB, Bb, and bb? Give the absolute expected frequency (number of bears) not the fraction/proportion of BB bears
The coat color of black bears depends on a gene with two alleles. Allele B is dominant and confers black coat, whereas allele b is recessive and homozygous bears have white coats (albino black bears, I know it sounds weird but it is true). As we know from genetics each bear has two alleles and the coat colors are as follows:
BB-black; Bb-black; bb-white.
A researcher obtained the following data for the genotypes (BB, Bb or bb) of black bears:
Genotype
Number of bears
BB
42
Bb
24
bb
21
You are performing the following hypothesis test:
H0: The genotypes of the bears follow a binomial distribution, with a probability of receiving the b allele equal to the observed proportion of the b allele in the population.
HA: The genotypes of the bears do not follow a binomial distribution
Q1 What is the fraction of b alleles in the population? Remember each bear has two alleles!
Q2 What is the expected frequency of bears with genotype BB, Bb, and bb? Give the absolute expected…
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The Analysis of Biological Data
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