11. Exam 1 Spring 2008 Key

11. Exam 1 Spring 2008 Key - Name ____________________...

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Unformatted text preview: Name ____________________ There are a total of 83 points on this exam. The first part of the exam is multiple choice. You will put your answers on the scantron sheet. There are 20 MC questions and each of these questions is worth 3 points each. The second part of the exam is open-ended. There are 4 open ended question. Points are shown next to each question. You will rip off the last page of this exam and turn in only the last page plus your scantron. Be sure your name and PID are on all. You may use scrap paper or write on this exam. _ 1 MULTIPLE CHOICE. PLEASE PUT ALL YOUR ANSWERS ON THE SCANTRON ANSWER SHEET. You may write all over this exam. 1. Which is NOT a property of a prokaryotic genome? 1) multiple introns 2) one circular chromosome 3) genes spaced close together 4) genomes smaller than eukaryotes 5) actually, all of these are correct properties 2. To perform a complementation test ________ is crossed to ________. 1) a monohybrid; a monohybrid 2) a monohybrid ; a tester 3) a dihybid; a tester 4) a tester; a tester 5) dihybrid; dihybrid 3. An individual who is heterozygous has Huntingtons disease. This type of mutation is called a: 1) null mutation 2) leaky mutation 3) recessive mutation 4) haplo-insufficient mutation 5) haplo-sufficient mutation 4. R = red flowers, r= white flowers; B = black seeds, b = brown seeds H = hairy stems, h = smooth stems When two trihybrids are mated (R/r; B/b; H/h x R/r; B/b; H/h) what proportion would you expect to have white flowers, black seeds and hairy stems? 1) 1/64 2) 3/64 3) 9/64 4) 27/64 5) none of these choices x x (using the branch diagram method) 5. Two genes independently assort in plants: yellow is dominant to white in flower color and serrated leaves are dominant to smooth leaves. When a yellow, serrated plant is crossed with a white, smooth plant the F1 offspring are: 49 yellow and serrated; 53 yellow and smooth; 46 white and serrated, and 57 white and smooth The genotype of the parental yellow, serrated plant was: 1) A/A; B/B 2 ) A/a; B/b 3) A/a; B/B 4) A/A; B/b 5) more than one choice is possible 6. Which statement is NOT true? 1) Humans have the largest genomes compared to all other organisms. 2) Humans have between 21,000 and 22,000 genes. 3) Chromosomes #1-5 are the largest of the human chromosomes. 4) The human genome contains 22 pairs of homologous autosomes. 5) The majority of human genes contain more than a single exon....
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11. Exam 1 Spring 2008 Key - Name ____________________...

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