Free Response: Fruit Flies Genetics To do well on the question, you will need to use the proper terminology and cover each point in the question in-depth. Be sure to define important terms and provide real world examples of how the concept relates to living organisms. In fruit flies, the phenotype for eye color is determined by a certain locus. E indicates the dominant allele and e indicates the recessive allele. The cross between a male wild type fruit fly and a female white eyed fruit fly produced the following offspring. F1 Wild-type Male 0 F2 Wild-type Female 45 Wild-type Male 23 White-eyed Male 55 The wild type and white eyed individuals from the F1 generation were then crossed to produce the following offspring. Wild-type Female 31 White-eyed Female 0 White-eyed Male 22 Brown-eyed Female 1 White-eyed Female 24 Brown-eyed Female 0 1. Determine the genotypes of the original parents (P generation) and explain your reasoning. You may use Punnett squares to enhance your description, but the results from the Punnett squares must be discussed in your answer. 2. Use a Chi-squared test on the F2 generation data to analyze your prediction of the parental genotypes. Show all your work and explain the importance of your final answer. 3. The brown eyed female in the F1 generation resulted from a mutational change. Explain what a mutation is and discuss two types of mutations that might have produced the brown eyed female in the F1 generation.
Free Response: Fruit Flies Genetics To do well on the question, you will need to use the proper terminology and cover each point in the question in-depth. Be sure to define important terms and provide real world examples of how the concept relates to living organisms. In fruit flies, the phenotype for eye color is determined by a certain locus. E indicates the dominant allele and e indicates the recessive allele. The cross between a male wild type fruit fly and a female white eyed fruit fly produced the following offspring. F1 Wild-type Male 0 F2 Wild-type Female 45 Wild-type Male 23 White-eyed Male 55 The wild type and white eyed individuals from the F1 generation were then crossed to produce the following offspring. Wild-type Female 31 White-eyed Female 0 White-eyed Male 22 Brown-eyed Female 1 White-eyed Female 24 Brown-eyed Female 0 1. Determine the genotypes of the original parents (P generation) and explain your reasoning. You may use Punnett squares to enhance your description, but the results from the Punnett squares must be discussed in your answer. 2. Use a Chi-squared test on the F2 generation data to analyze your prediction of the parental genotypes. Show all your work and explain the importance of your final answer. 3. The brown eyed female in the F1 generation resulted from a mutational change. Explain what a mutation is and discuss two types of mutations that might have produced the brown eyed female in the F1 generation.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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