The screen is a high frequency‚ high vibration strength for the main features of the vibration sieve‚ mainly for wet classification of solid-liquid separation of fine material below 0.5mm. In the coal preparation industry‚ its investment and operating costs low‚ making the most of the coal preparation plant has the ability to use their recycling slime in order to achieve a closed recycling of wash water and to improve the coal preparation plant environment‚ and the obvious economic and social benefits
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Genetics test Week 31 Hardy Weinberg 1. If the frequency of allele p in a certain population is 0.78‚ what is the frequency of allele q? (1) 2. If the frequency of recessive homozygotes for a particular gene within a population is 0.36‚ what is the frequency of the recessive allele? (1) 3. What does the “2pq” part of the equation represent? (1) The peppered moth Biston betularia showed an increase in melanic (dark) forms during the industrial revolution. In most polluted
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facility. Lethal alleles are those that fail to successfully code for the proper production of a functional protein that is vital for life. Recessive lethal alleles are mutations that are only lethal to homozygotic individuals with two copies of the mutated allele (Castle‚ 1910) . In humans cystic fibrosis and sickle cell anemia are two examples of recessive lethal alleles. A dominant lethal allele is a mutation that is lethal to any individual that has one or two copies of the allele. Huntington’s
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genetic equilibrium‚ the frequency of allele A is 0.5. a. What is the frequency of the homozygous dominant genotype (AA)? b. What is the frequency of the heterozygous genotype (Aa)? 2. If 16% of the individuals in a population at genetic equilibrium are recessive (aa). a. What is the frequency of the recessive allele in the population? b. What is the frequency of the dominant allele? 3. If the genotype frequencies in a population at
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occur and their implications for future genetic variation in a population. Genetic drift‚ defined as the process in which chance events cause unpredictable fluctuations in allele frequencies from one generation to the next‚ can increase or decrease variability within particularly small populations. Certain genotype/phenotype frequencies‚ for example‚ may be reduced or completely eliminated through chance events. Examples of genetic drift might include the founder effect‚ which consists of a select amount
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stripes show that the starfish can morph into other marine animal. Starfish are given this characteristic by a recessive allele. * A) What is the frequency of the genotype of individuals in the population born with green stripes? * B) What is the frequency of the dominant allele? * C) What is the frequency of the recessive allele? * D) What is the frequency of the carriers in the population? Question 2 9 out of 1800 leprechauns are born with brown hair‚ whereas the remaining
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Biology 301 12/3/2012 The Effects of Relative Fitness of Drosophila Melanogaster on Evolution Abstract This experiment was conducted to study the relative fitness of two phenotypes of the Drosophila melanogaster and how fitness can affect evolution in the population. The phenotypes were placed in two different environments‚ one in which contained a predator and another with no predator. Results of the experiment would show how the fitness of each phenotype is affected by providing a mechanism
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initial gene pool. The light beans represent the F alleles‚ and the dark beans represent the f alleles. This is the gene pool produced by mating between heterozygous (Ff) and homozygous normal (FF) individuals. Use the following to determine the number of dominant alleles in the population and the same formula to determine the number of recessive alleles in the population. number of offspring with genotype FF (two dark beans) _____ × 2 = _____ F alleles number of offspring with genotype Ff (one dark
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developed a theory on evaluation. Their theory defines evolution as being the sum total of the genetically inherited changes in the individuals who are the members of a population’s gene pool. They observed that evolution is simply a change in frequencies of alleles in the gene pool of a population. Hardy and Weinberg‚ and the population geneticists who followed observed that evolution will not occur in a population if seven conditions are met: 1. Mutation is not occurring 2. Natural selection is
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Microevolution results due to the changes in allelelic frequencies that occur over time within a population. This type of evolution is calculated by a model used in population genetics called the Hardy Weinberg equation. The Hardy-Weinberg equation allows researchers to determine whether evolution has taken place by adhering to five specific conditions. The law essentially states that if no evolution is occurring‚ then an equilibrium of allele frequencies will remain in effect in each succeeding generation
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