iBISC403 Genetics and Evolutionary Biology Exam 2‚ March 22‚ 2012 Instructions: 1. Grid in your name on the answer sheet. 2. DO NOT grid in your student number‚ the course number or section. 3. Print your last name at the top of this cover page and short answer pages. 4. At the end of the exam‚ turn in your exam and your answer sheet together. All multiple choice questions are of equal value and together are worth 80% of the exam. The three short answer questions are each of indicated value and worth
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Childhood Obesity: A New Epidemic The nature of society has changed greatly since the mid 20th century. With this change‚ the face and size of American youth has been altered. Increasing numbers of children ranging from infants to adolescents have become obese. Since the 1970’s‚ obesity in children age two to five and adolescents age 12 to 19 has more than doubled. However‚ the fact that the percentage of children between the ages of 6 and 11 who are obese has tripled is increasingly frightening
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Chapter 2 The Brain and Behavior Chapter Preview • This chapter will cover the following domains: • The nervous system • Neurons • Structures of the brain and their functions • Brain damage‚ plasticity‚ and repair • Genetics and behavior • As with chapter 1‚ this presentation will serve as a study guide‚ highlighting the most important concepts which you should study for your midterm by reading your textbook in depth Nervous System: Characteristics • The nervous system is a massive electrochemical
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generation to determine their mode of inheritance; whether they are sex-linked or autosomal‚ and recessive or dominant‚ utilizing the Chi-square statistical test‚ which compares observed and predicted results‚ and to ultimately determine the genotype and phenotype of the parents. In this experiment‚ given the nature of a dihybrid cross‚ the following hypothesis was formulated. According to Mendel’s Laws of Inheritance‚ the F2 generation of a dihybrid cross involving two traits of a homozygous recessive
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Mendelian Genetics * Pea plants have several advantages for genetics. * Pea plants are available in many varieties with distinct heritable features (characters) with different variants (traits). * Another advantage of peas is that Mendel had strict control over which plants mated with which. * Each pea plant has male (stamens) and female (carpal) sexual organs. * In nature‚ pea plants typically self-fertilize‚ fertilizing ova with their own sperm.
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traits Gradualism Punctuated equilibrium Population Genetics 1. What does the Hardy-Weinberg equation tell us? 2. How do you calculate the genotype‚ phenotype‚ and allele frequencies in a living population? 3. How would you calculate the expected frequency of the homozygous dominant‚ homozygous recessive and heterozygous genotypes using the Hardy-Weinberg Equation? 4. What is the difference between microevolution and macroevolution? Race Concepts 1. What is the biological
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Name Chantell Johnson BioScience 100A Online Virtual Lab Report: Part I Points: 120 (30/each) Due by: 12:00 PM PST on the second Saturday of class Directions 1. Type your answers‚ observations‚ and results in bold. 2. Save your report often as you fill it out‚ so as not to lose information. 3. Use the report form as a single document‚ do not turn in separate reports for each lab 4. Use the ‘Save As’ option to save your file as a Word file 5. Save your lab report with this name: Last name
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“Human genetic engineering is the alteration of an individual’s genotype with the aim of choosing the phenotype of a newborn or changing the existing phenotype of a child or adult. It holds the promise of curing genetic diseases like cystic fibrosis‚ and increasing the immunity of people to viruses. It is speculated that genetic engineering could be used to change physical appearance‚ metabolism‚ and even improve mental faculties like memory and intelligence”. (Wikipedia) There are many risks associated
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candidate genes‚ various forward or reverse genetic tools may be implemented to find candidate genes. Forward genetics implies that the phenotype or function is known and can be used to figure out which gene causes the specific phenotype or function. Reverse genetics starts from genes that have been identified from sequencing projects‚ but the function or phenotype is not yet known. Many genomic techniques are used in forward and reverse genetics. However‚ the ones I will be addressing in this paper
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Evidence of evolution suggests life may change. Outline the impact on the evolution of plants and animals of: Changes in physical conditions in the environment - Some animals do not survive changes in the environment and become extinct or endangered. Changes in physical conditions such as climate ad exposure to fire has led to changes in flora (Australia drifts north) Changed in chemical conditions in the environment - pH of environment can be critical to functioning of enzymes and metabolism
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