Midterm 2006

Midterm 2006 - BIO320 BLUE (0) MIDTERM 1 SPRING 2006 Fill...

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BIO320 BLUE (0) MIDTERM 1 SPRING 2006 1 Fill in your name and I.D. number on your SCANTRON and on the ANSWER SHEET at the back of the test before starting. You should have a BLUE form. Answers to the multiple choice questions must be filled in on the scantron with a #2 pencil. Answers to the four short answer questions should be entered directly on the answer sheet at the back of the test . REMOVE THE SHORT ANSWER SECTION, FOLD IT AND PLACE YOUR SCANTRON IN IT BEFORE TURNING THEM IN. There are 20 multiple choice questions worth 4 points each and 4 short answer questions worth a total of 20 points. SCANTRON and ANSWER SHEETS will be collected when time is called at 3:40 PM. If you finish before time is called then you may deposit your SCANTRON and your ANSWER SHEET in the box at the front of the room. You may keep your copy of the exam questions (it will be useful as a study guide for the FINAL!). Your exam will not be credited unless a TA has checked your ID and signed you in . They will be coming around during the exam to do this. If you finish before a TA has signed you in, then please sign in up front when depositing your exam. GOOD LUCK!! Table of calculated χ 2 values for different p values and different degrees of freedom. df 1 2 3 4 5 p 0.99 0.90 0.50 0.10 0.05 0.01 0.001 -- 0.02 0.11 0.30 0.55 0.02 0.21 0.58 1.06 1.61 0.45 1.39 2.37 3.36 4.35 2.71 4.61 6.25 7.78 9.24 3.84 5.99 7.81 9.49 11.07 6.64 9.21 11.35 13.28 15.09 10.83 13.82 16.27 18.47 20.52
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BIO320 BLUE (0) MIDTERM 1 SPRING 2006 2
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BIO320 BLUE (0) MIDTERM 1 SPRING 2006 3 1. A pure-breeding organism that has black spots on white fur is crossed with a pure-breeding organism that has brown spots on white fur and the resulting F1 progeny have both brown and black spots on white fur. When the F1 progeny are crossed with each other, the following phenotypes and numbers are observed in the F2: 31 black spots on white fur 92 black and brown spots on white fur 29 brown spots on white fur 9 white fur The MOST LIKELY explanation for these results is: A. Black spots are epistatic to brown spots. B. Black and brown spots are determined by co-dominant alleles. C. The black spot gene and the brown spot gene are unlinked. D. Black spots are dominant to brown spots. E. Brown spots are dominant to black spots. 2. The genes I A , I B , and i contribute to the ABO blood antigens in humans. In two other traits, R ( Rh + ) is dominant to r ( Rh - ) and L M and L N are codominant alleles. In the cross:
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Midterm 2006 - BIO320 BLUE (0) MIDTERM 1 SPRING 2006 Fill...

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