BISC120_Fall08_Heidelberg_Exam1

BISC120_Fall08_Heidelberg_Exam1 - Name: _ Fall 2008 BISC...

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Name: ________________________________ Fall 2008 BISC 120Lg Midterm 1 Instructor: Dr. Karla Heidelberg PLEASE READ ALL THE INSTRUCTIONS CAREFULLY. 1. DO NOT start until instructed to do so. 2. Write your name on all the pages. 3. Make sure you have a total of 8 pages. 4. Read all the questions carefully. 5. Note that questions have different point values. In all, 100 points are possible. 6. Answers written outside of the box will NOT be graded. 7. If we can’t easily read it, we won’t try to grade it. Handwriting counts! 8. Answers written in pencil CANNOT be submitted for a re-grade. 9. You have 50 minutes for this exam. Page # Score Please check the box next to your TA’s name : Lin Ding Youngkyoung Kim Yao Ding Jessica Ledesma Nicholas Foster Chanpreet Singh Glenn Fox Mona Sobhani Nathan Garcia Jagruti Vedamati Kathleen Garrison Fan Young Yu-Tien Hsu Yue (Alan) Zhang Yerina Ji 1. 1 0__ /0 pts 2 _____/12 pts 3 _____/16pts 4 _____/15 pts 5 _____/14 pts 6 _____/14 pts 7 _____/9 pts 8, 9 ___ /20 pts Total _____/100 pts
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Name: ________________________________ I. Multiple Choice (2 pts each): Choose the one answer that fits the question. 1. A 1:2:1 (purple:pink:white) phenotypic ratio in the F 2 generation of a monohybrid cross between a purple flowered pea plant and a white flowered pea plant is a sign of: A) complete dominance B) multiple alleles C) incomplete dominance D) polygenic inheritance E) pleiotropy 2. How many unique haploid gametes could be produced through independent assortment by an individual with the genotype aaBBCcDdEE? A) 64 B) 32 C)16 D) 8 E) 4 3. In some pigs, droopy ears (D) are dominant to straight ears (d), and curly tails (T) are dominant to straight tails (t). What fraction of the progeny of the cross DdTt x DDtt are expected to have droopy ears and straight tails? A) 1/16 B) 3/16 C) 3/8 D) 1/2 E) 9/16 4. Assumptions of the Hardy-Weinberg principle include all of the following, EXCEPT: A) required migrations B) no mutations C) random mating D) an infinitely large population E) no selection 5. Mutation is ________________, while natural selection is ____________________ . A) never maladaptive, always favorable B) random, directed selection C) directed selection, random D) always favorable, never maladaptive E) A and B 6. Choose the answer that has a hierarchical classification ranked as largest to smallest (note that not all categories are present): A) domain, order, class, family B) kingdom, family, class, order C) class, order, family, genus D) kingdom, domain, class, order E) species, genus, family, order 2. C B A D E C
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Name: ________________________________ 7. Which of the following pairs are the best examples of homologous structures? A) bat wing and human hand
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This note was uploaded on 12/01/2010 for the course BIO 120 taught by Professor Staff during the Spring '07 term at USC.

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BISC120_Fall08_Heidelberg_Exam1 - Name: _ Fall 2008 BISC...

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