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The Ridings High School B BTEC First Certificate Applied Science Unit 5: Biological Systems The Ridings High School Science Faculty Course title: BTEC First Certificate in Applied Science Tutor name: Mr Mayo Assignment title: Genes and variation Learner name 6th October 2008 Start date: Deadline: 20th October 2008 Unit 5: Biological Systems Scenario You are in a situation where you are required to explain the inheritance of a disease to a group of assistant practitioners within a hospital. To start with you are going to have to explain where DNA and genes are located in the cell and how genes and chromosomes can pass on information to other cells. You need some visual materials which will help you to get your point across to them as well as some written explanatory materials. The tasks will help you to prepare materials for your presentation. Assessment evidence: Unit Grading criteria The grading criteria that this assignment relates to: U5 P4: describe the relationship between chromosomes, DNA and genes M4: describe (using examples) how variation within a species brings about evolutionary change D4: explain how genes control variation within a species using a simple coded message. Summary assessor’s feedback Internal verifier’s comment Learner’s signature Unit 5: Biological Systems Task 1 The Ridings High School B BTEC First Certificate Applied Science Unit 5: Biological Systems Genes and variation Unit 5 learning outcome 3: Understand that genes are responsible for inheritance, and variations within species, leading to evolutionary change. Unit content covered: Genes control cell function: DNA code; translation; structure of a protein, e.g. enzyme; control of cells’ activities DNA molecule: coded sequence of bases (A, C, T, G) Evolutionary change: role of genetic variation, environmental conditions. Task 1 Prepare an ‘action’ poster or model to demonstrate the structure of DNA showing the base sequences, the formation of messenger RNA and the process of protein formation from a series of amino acids assembled from the RNA instructions. Prepare a set of ‘slides’ to illustrate your explanation Research the topic first using relevant text books or websites then use PowerPoint or a series of illustrations to show the following steps in the process: DNA Double Helix molecule The base pairs along the two sides of the double helix The process of DNA Transcription to make messenger RNA The process of RNA Translation to make proteins from amino acids P4 Task 2 Summarise the causes of gene and chromosome mutation and suggest how these changes can bring about evolutionary changes by the process of selection using named examples Explain how DNA can be changed by chemicals or forms of radiation such as UV, Xrays or gamma rays. M4 Task 3 Using diagrams, prepare a leaflet on the way in which genes carry inherited information from one generation to another via the process of meiosis and gamete formation, and through fertilisation. Refer to simple monohybrid inheritance and examples of this in human inheritance; describe what is meant by discontinuous variation and continuous variation. D4 The grading criteria that this assignment relates to: P4: describe the relationship between chromosomes, DNA and genes M4: describe (using examples) how variation within a species brings about evolutionary changes D4: explain how genes control variation within a species using a simple coded message. Unit 5: Biological Systems Task 1