Access to Higher Education 2012/2013 Student Subject Tutor Unit: Core Biology Unit 2 Assignment Title: Genetics Internal verifier: IV sample Y/N Date Due Week Date Received Extension Agreed Y/N Resubmission Date Learning Outcome 1. Understand how genetic information is passed from parents to offspring. Assessment Criteria 1.1 Recall the main stages of meiosis and understand the biological significance of the process. ( question 5) 1.2 Understand Monohybrid and Dihybrid Mendelian Inheritance
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Problem Set – Monohybrid and Dihybrid Cross 1. Classical albinism results from a recessive allele. What is the expected offspring from a normally pigmented male with an albino father and an albino wife? 2. A pea plant with red flowers is test crossed and one half of the resulting progeny have red flowers‚ while the other half has white flowers. What is the genotype of the test crossed parent? 3. If we cross two pea plants each heterozygous for yellow seed color genes‚ what would be the
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the trait flower color (p). 3. Different versions of a gene are called ____________. 4. Why are there always two alleles present for each gene at a specific locus? 5. True or False. A dominant allele is always written with a capital letter‚ whereas the recessive allele is always written in lower-case. 6. True or False. In a sperm or egg‚ both of the two alleles on the homologous chromosomes are passed on to offspring. 7. When genes are present on the same chromosome‚ they are
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It is very important to have a large test group so the results are more proven‚ since the population is larger. E. If all yellow seedlings were removed from the population‚ would the next generation still have a chance at displaying the yellow allele? Explain. Yes‚ because one of the green seedlings may have a hidden recessive gene. F. Would a cross between a homozygous and a heterozygous parent show the same ratios? Explain. It depends if the homozygous parent is homozygous recessive or
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AB blood. A & B alleles are codominant‚ so if both A and B are present they will be expressed together. O alleles have neither A or B antigens. O and O will result in O or O‚ an O or B will result in an O or B. A and A can result in A or O (same for B and O). AB and AB can result in A‚ B‚ or AB. They inherit it depending on the combo of their parent’s blood type. The Rh blood group is also a human blood system group. It is independently inherited from the ABO blood group alleles. Rh has Rh+ and Rh-
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one golden bodied fly. We would expect to see the same outcome for the F2 Generation. The trait for body color is autosomal recessive in the golden bodied drosophila. The allele for the tan bodyis dominant over the recessive golden body‚ because tan bodies are standard in flies where as golden bodies are a recessive mutant allele. After collecting data from the entire class and performing a chi square analysis
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For this experiment you will need green and white seedling The purpose of this experiment was to test two different hypotheses about the credibility of Mendel’s law of independent assortment and law of segregation. First is that the first plant is the product of a monohybrid cross. A monohybrid cross is “a cross between two organisms that are heterozygous for the character being followed” (Urry‚ G-21). The monohybrid is represented through a phenotypic ratio of 3:1 and a dihybrid cross is represented
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Gregor Mendel believed that genes followed “natural laws” and could be expressed in simple mathematical terms (Brooker 19). He was mostly intrigued by how genes varied as they pass from generation to generation (Brooker 18). Mendel decided to test his mathematical hypothesis using pea plants since they came “in several varieties‚ which varied in height and in the appearance of their flowers‚ seeds‚ and pods‚” (Brooker 19). He also decided to use self-fertilization and cross-fertilization to see which
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Maintaining a Balance Enzymes 1.1 Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity on substrates Enzymes are biological catalysts‚ meaning they are organic and speed up a chemical reaction without taking part in it. This means it has a vital role in metabolism where it ensures that the chemical reactions that make up metabolism can function fast enough to sustain life by lowering activation energy. Metabolism
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chromosomes which decide if we are a boy or girl phenotypically‚ XX means girl whereas XY means boy. Alleles are basically alternatives to each gene‚ there can be recessive or dominant alleles. There are 6 pattern of inheritances‚but i’m only going to talk about 5 because Mr.O said there would be no polygenetics so there is: Complete Dominance‚ Incomplete Dominance‚ Codominance‚ Multiple Alleles and Sex Linked Traits. Complete Dominance is when there is one allele and two possibilities you either get the phenotype or you don’t
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