Answer - Answers Lab Exam 1 Bio 1A, Summer 2009 1 2 3 4 5 6...

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Answers Lab Exam 1 Bio 1A, Summer 2009 1 D 11 C 21 C 31 41 2 C 12 D 22 D 32 42 3 E 13 B 23 C 33 43 4 E 14 A 24 A 34 44 5 C 15 D 25 E 35 45 6 A 16 B 26 B/C 36 46 7 E 17 A 27 B 37 47 8 C 18 D 28 38 48 9 C 19 D 29 39 49 10 D 20 B 30 40 50 NO STATS OR CUT-OFFS AT THIS TIME. 1) Each chromatid is composed of double stranded DNA. 3) Remember that hydrophilic and polar are almost interchangeable. 4) Polymerization is 5’ to 3’ and growth occurs by attaching the phosphate to the 3’ OH. 5) Work out the math. 1,500 bp X 600 grams/mole bp = 9 X 105 grams per Mole. 1.8 X 10 -7 grams/9 X 10 5 = 0.2 X 10 -12 = 2.0 X 10 -13 X 6 X 10 23 = 12 X 10 11 = 1.2 X 10 10 . 7) You want the unprotonated state of each (for – charge). pH 4.3 will be best to use. 8) G1 (before S) means there are 8,000 genes. 1N = 4 means 8,000 genes must fit in the 1N state. 9) Look for the lowest d value = choice C. 10-12) Last two represent double recombinants, thus C is in the middle. Rewrite genotypes once you know the correct order. A and B on the outside so it will be close to 15 + 5 map units. 14)
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Answer - Answers Lab Exam 1 Bio 1A, Summer 2009 1 2 3 4 5 6...

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