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Observed Blood Group




#1;Observed;Blood Group;MM;MN;NN;Total;Number;3078;4800;3490;Genotypic Frequency;5;Allele Frequency;M;N;Using the observed numbers of individuals above with a particular blood group, calculate;genotypic and allelic frequencies for the population (do not assume in H-W equilibrium).;Then, determine if the genotypic frequencies observed are equal to the expected;equilibrium frequencies calculated according the Hardy - Weinberg law.;Is the population in H-W equilibrium? Yes or No Why did you make your conclusion?;(Modified from Ayala 1983);Blood Group;MM;MN;NN;Expected Genotypic Frequency;#2;You have a population that, before selection, consists of 0.3 AA individuals, 0.5 Aa;individuals, and 0.2 aa individuals. The absolute fitnesses associated with each of these;three genotypes are 0.3, 0.5, and 1.0, respectively. What is the frequency of A, before;selection and following one round of selection.;#3;A plant population consists of two flower morphs, white and red, controlled by a single;gene with two alleles. The white morph represents the recessive homozygote. The red;morph consists of some combination of heterozygotes and dominant homozygotes.;Assume that 20% of the population has red flowers. What are the frequencies of all three;genotypes assuming Hardy-Weinberg equilibrium?;#4;In the peppered moth (Biston betularia), let us assume that black individuals are;homozygous for the A allele, grey moths are heterozygous, and white moths are;homozygous for the a allele. Suppose that in a sample of 400 moths from one locality;(before selection), 68 are black, 192 are grey, and 140 are white.;a. What are the genotype frequencies?;b. What are the allele frequencies of A and a?;c. Is the population in Hardy-Weinberg equilibrium?;Let us now assume that the population underwent a major bought of selection. After this;selection event the population consisted of 28 black, 148 grey, and 13 white moths.;d. What are the absolute fitnesses?;e. What is the population mean fitness?;f. What are the relative fitnesses?;g. What are the genotype frequencies after selection?;h. What are the allele frequencies after selection?;i. What is the change in the frequency of the recessive allele?;j. What type of selection occurred?;#5a On an island recently separated from the mainland there exists a population of 10,000;frogs. 25 of these frogs carry a recessive albino condition, the rest of the frogs are green.;Assuming Hardy-Weinberg, what are the genotype and allele frequencies for this;population?;#5b A solar flare causes 10% of the population to die from sunburn. Of the 10% who died, 10;individuals were albino and the rest were split evenly between heterozygous (Gg) and;dominant (GG) individuals. What are the new genotype and allele frequencies for the;population? What are the absolute, average, and relative fitnesses for this population as;well?;#5c A misguided friend discovers this population and is alarmed by the rarity of the albino;frogs. In and attempt to prevent their extinction he facilitates the immigration of frogs;from the mainland population at a rate of 0.05. The mainland population consists of;20,000 individuals: 15,000 albino, 4,000 heterozygous, and 1,000 dominant individuals.;What is the change in the albino allele frequency due to migration?


Paper#15308 | Written in 18-Jul-2015

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