Homework Answers
Ans 4:- Bird migration is the regular seasonal movement, often north and south between breeding and wintering grounds. Migration carries high costs in predation and mortality including hunting by humans and also depends on the availability of food. Genetic correlations plays an important role in determining the rate and direction of evolutionary change. Cross breeding of migrants with nonmigrants has resulted in the partial transmission of migratory activity. A population of birds in Alaska is migrating to Russia, which is studied depending on the genetic variation. There would be dramatic change in gene frequency, which leads to extremely rapid evolutionary changes to occur in migratory behaviour.
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A population of birds in Alaska have long, sharp talons used for stabbing prey, 23% of...
9 Populations evolve for many reasons. Suppose there is a small population of birds that have...
9 Populations evolve for many reasons. Suppose there is a small population of birds that have either brown chest feathers or yellow chest feathers, and the Question Not yet answered allele for the brown feathers is dominant. The frequencies for the two alleles in the population are approximately equal Points out of 1.00 For each event or condition described below, answer the following questions. P Flag question o What mechanism? Identify whether the event is natural selection, genetic drift, or...
4. In a given population, 16% of the population has blue eyes and 84% has brown...
4. In a given population, 16% of the population has blue eyes and 84% has brown eyes. Although eye color is a polygenic trait, let us assume for this problem that the brown-eyed allele is dominant to the blue-eyed allele and that the population is in Hardy-Weinberg equilibrium. What are the gene frequencies for brown eyed and blue-eyed alleles? = '16 Pa Brown-eyed allele frequency: _ qe 0.4 Pa 0.4 Blue-eyed allele frequency: - In this same population, there are...
The Chi-square test is often used to test if different ratios are the same, for example...
The Chi-square test is often used to test if different ratios are the same, for example to see if a trait is controlled by one or many genes. Here we would like you to see if there the ratio is equal to the 3:1 ratio which would mean the trait is controlled by a single gene, for the gene shrunken2 which makes corn sweet. 4. Class Expected Frequency Round 290 300 Shrunken2 110 100 a. What is the null hypothesis?...
Testing the goodness of fit between the data and the Hardy Weinberg equilibrium model generated expectations....
Testing the goodness of fit between the data and the Hardy Weinberg equilibrium model generated expectations. 4.1 In a species of bird, feather color is controlled by genes at a single locus, with the red feather allele dominant to the yellow feather allele. A population has 22 red and 14 yellow birds, with 9 of the red birds having a homozygous dominant genotype. Is this population in equilibrium? Calculate p and q from the number of individuals of each genotype:...
5. Fur colour in mice is a single gene trait controled by two alleles. In a population of 75 mice, 21 are homozyg...
5. Fur colour in mice is a single gene trait controled by two alleles. In a population of 75 mice, 21 are homozygous dominant, 37 are heterozygous dominant, and 17 are homozygous recessive. What is the frequency of the dominant allele in the population? Show all work and record your answer as a value between O and 1 rounded to two decimal places 6. The Hardy-Weinberg principle states that allele and genotype frequencies remain constant from one generation to the...
Hemophilia is an x-linked recessive trait. In a population of 2000 people, 4 women have hemophilia,...
Hemophilia is an x-linked recessive trait. In a population of 2000 people, 4 women have hemophilia, 30 men have hemophilia, and 80 are carriers of the disorder. What is the frequency of the hemophilia allele? (Assume the population is 50% men and 50% women.) a.0.059 b.0.033 c.0.057 d.0.039 e.0.038 In a population of 15,000 individuals, 1350 express a recessive trait. How many heterozygotes are there expected to be? a.2100 b.3150 c.6300 d.1800 e.4200
You have journeyed to the center of the earth, and discovered the lost population of Tyrannosaurus...
You have journeyed to the center of the earth, and discovered the lost population of Tyrannosaurus rex. Naturally, the first thing you do is study evolution in their population. 10) You identify the Ferocity locus, and notice that the Tyrannosaurs differ in fitness depending on their genotypes (FF, Ff and ff) and the associated phenotypes, and the associated trait is heritable. a) What evolutionary mechanism is relevant to this scenario? (2 points) b) FF and Ff individuals have the same...
Determining if allele frequencies are changing from one generation to the next (microevolution) from the number...
Determining if allele frequencies are changing from one generation to the next (microevolution) from the number of individuals of each genotype present: The following steps are used to determine if allele frequencies are changing: Calculate Allele frequency from the number of individuals of each genotype Calculate expected genotypic frequencies and individuals in a population from allele frequencies: Test the goodness of fit between the data and the Hardy Weinberg equilibrium model generated expectations. The following problems are the calculations used...
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...
0 b) 0.21 c) 0.42 d) 0.49 e) 0.91 Problem 3: in humans, Rh-positive individuals have...
0 b) 0.21 c) 0.42 d) 0.49 e) 0.91 Problem 3: in humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh. negative individuals do not. If the Rh-positive phenotype is produced by a dominant gene (A), and the Rh negative phenotype is due to its recessive ailele (a). what is the frequency of the Rh-positive allele if 84% of a population is Rh-positive? a) 0.04 b) 0.16 c) 0.48 d) 0.60 e) 0.84 Problem 4:...
9 Populations evolve for many reasons. Suppose there is a small population of birds that have either brown chest feathers or yellow chest feathers, and the Question Not yet answered allele for the brown feathers is dominant. The frequencies for the two alleles in the population are approximately equal Points out of 1.00 For each event or condition described below, answer the following questions. P Flag question o What mechanism? Identify whether the event is natural selection, genetic drift, or...
4. In a given population, 16% of the population has blue eyes and 84% has brown eyes. Although eye color is a polygenic trait, let us assume for this problem that the brown-eyed allele is dominant to the blue-eyed allele and that the population is in Hardy-Weinberg equilibrium. What are the gene frequencies for brown eyed and blue-eyed alleles? = '16 Pa Brown-eyed allele frequency: _ qe 0.4 Pa 0.4 Blue-eyed allele frequency: - In this same population, there are...
The Chi-square test is often used to test if different ratios are the same, for example to see if a trait is controlled by one or many genes. Here we would like you to see if there the ratio is equal to the 3:1 ratio which would mean the trait is controlled by a single gene, for the gene shrunken2 which makes corn sweet. 4. Class Expected Frequency Round 290 300 Shrunken2 110 100 a. What is the null hypothesis?...
5. Fur colour in mice is a single gene trait controled by two alleles. In a population of 75 mice, 21 are homozygous dominant, 37 are heterozygous dominant, and 17 are homozygous recessive. What is the frequency of the dominant allele in the population? Show all work and record your answer as a value between O and 1 rounded to two decimal places 6. The Hardy-Weinberg principle states that allele and genotype frequencies remain constant from one generation to the...
You have journeyed to the center of the earth, and discovered the lost population of Tyrannosaurus rex. Naturally, the first thing you do is study evolution in their population. 10) You identify the Ferocity locus, and notice that the Tyrannosaurs differ in fitness depending on their genotypes (FF, Ff and ff) and the associated phenotypes, and the associated trait is heritable. a) What evolutionary mechanism is relevant to this scenario? (2 points) b) FF and Ff individuals have the same...
0 b) 0.21 c) 0.42 d) 0.49 e) 0.91 Problem 3: in humans, Rh-positive individuals have the Rh antigen on their red blood cells, while Rh. negative individuals do not. If the Rh-positive phenotype is produced by a dominant gene (A), and the Rh negative phenotype is due to its recessive ailele (a). what is the frequency of the Rh-positive allele if 84% of a population is Rh-positive? a) 0.04 b) 0.16 c) 0.48 d) 0.60 e) 0.84 Problem 4:...
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