bicd 100 final no answers

bicd 100 final no answers - Student name BICD100 GENETICS...

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Student name____________________________________________________________ page1of 16 BICD100 GENETICS Prof. Reinagel FINAL EXAM Friday December 10, 2004 3:00PM – 6:00 PM Sign this release if you want your exam left on 3 rd floor of Pac Hall for you to pick up after it is graded: ____________________________________________________________ This exam has 10 questions and is worth 50 points (half your grade). Notice that not all questions are worth equal points. Some questions have more than one page. Demonstrate your knowledge. To get full credit you must SHOW YOUR WORK. If you are stuck, try to put something that shows what you do know (or even why you are stuck). Pace yourself! Before you start working, write your name on every page and read through all the questions. Focus first on the questions that you find easy and the ones that are worth the most points. Try to relax! ________ Question 1 (5pt) ________ Question 2 (5pt) ________ Question 3 (2 pt) ________ Question 4 (5pt) ________ Question 5 (6pt) ________ Question 6 (2pt) ________ Question 7 (5pt) ________ Question 8 (4pt) ________ Question 9 (6pt) ________ Question 10 (10pt) ________ Extra Credit ________ TOTAL
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Student name____________________________________________________________ page2of 16 Question 1 (5 points. There are three parts a,b,c) Here are some data from one of Mendel’s experiments on pea plants: A , form round a , form wrinkled B , albumen yellow b , albumen green Parents — AB X ab F1 appeared round and yellow (self cross) F2 315 round and yellow, 101 wrinkled and yellow 108 round and green, 32 wrinkled and green. 1a) What was the predicted phenotypic ratio based on equal segregation and independent assortment (Mendel’s 1 st and 2 nd laws)? 1b) What are the genotype(s) of the wrinkled yellow progeny in the F2?
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Student name____________________________________________________________ page3of 16 1c) Using a Chi Square Test, what is the probability of the data being at least this far off from the prediction by chance, if the model is correct? SHOW YOUR WORK
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Student name____________________________________________________________ page4of 16 Question 2. (5 points, There are four parts a,b,c,d) You have a pure-breeding “wild-type” strain of peas which have yellow seeds, and three independently-derived pure-breeding strains that have green seeds. You cross each green- seeded strain to the yellow-seeded strain with the following results: green strain 1 green strain 2 green strain 3 Parental: purebred green purebred green purebred green x purebred yellow x purebred yellow x purebred yellow F1 phenotype: yellow seeds yellow seeds green seeds Self cross F1 Self cross F1 Self cross F1 F2 phenotype: 3 yellow:1 green 3 yellow:1 green 1yellow: 3 green 2a) For each strain make up a symbol for the dominant and recessive alleles. State the symbols and the phenotype of each allele in the chart below. Use different symbols for the different strains.
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