test 2-2 - Name Student number Biology 2C03 Term Test#2...

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Name:___________________________________ Student number: __________________________ Biology 2C03 Term Test #2 Instructors: Dr. Kimberley Dej, Ray Procwat Date: Monday March 1 st , 2010 Time: 10:30am to 11:20 am Instructions: 1) This midterm test consists of 9 pages. Please ensure that all pages are present. 2) Print your name and student number at the top of each page. Also, print your name and student number on the scantron card. 3) There are 25 multiple-choice questions (1 mark each). Please use the computer card to record your multiple-choice answers. Any answers not indicated on the scantron card will not be graded. (25 marks total) 4) There are 2 short-answer questions. Please answer these questions in the allotted space on this quiz. (10 marks total). 5) The final grade is out of 35 marks. 6) The test is 50 minutes long. 7) Please hand in the test package and the scantron card at the end of the test. Removal of tests is considered academic dishonesty. Good luck!! Biology 2CO3 Page 1 of 10 Grade: MCQ : /25 SA: /10 Final: /35
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Name:___________________________________ Student number: __________________________ Part A. 25 Multiple-choice questions: 1 mark each. Please indicate your answers on the scantron card. 1. What is the correct definition of independent assortment? a) an individual with two different alleles of a gene b) the separation of the two alleles of a gene into different gametes c) alleles of one gene separate into gametes randomly with respect to alleles of other genes d) having two identical alleles of a given gene e) the localization of genes onto distinct chromosomes 2. You are given the following allelic series for alleles that determine cat fur colour: Five alleles with the following relationship: C > c b = c s > c > c a where : C : full colour c b : Burmese c s : siamese c : white, blue eyes c a : albino, pink eyes What would be the phenotype of: c s / c a ? a) full colour b) burmese c) siamese d) white, blue eyes e) albino, pink eyes 3. Which of the following genetic crosses would be predicted to give a phenotypic ratio of 9:3:3:1 (assume complete dominance)? 4. Which of the following is NOT an example of a modified dihybrid ratio? Biology 2CO3 Page 2 of 10
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Name:___________________________________ Student number: __________________________ 5. Which of the following genotypes would you not expect to find among the offspring of S/s Y/y X s/s y/y ? Questions 6 through 8. 6. In tomatoes, red fruit ( R ) is dominant to yellow fruit ( r ), and purple stems ( P ) are dominant to green stems ( p ). The following are the progeny from a cross between two plants. What were the genotypes of the two parental plants? red fruit, purple stems 305 red fruit, green stems 328 yellow fruit, purple stems 110 yellow fruit, green stems 97 a) R/r P/p X R/r P/p b) R/r P/p X R/r p/p c) R/R P/P X R/r P/p d) R/R P/P X r/r p/p e) R/r P/p X r/r p/p 7. In are studying the same tomato plants as in question 6. The following are the progeny from a cross between two plants. What were the genotypes of the two parental plants?
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