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MidtermII_Biol202_sec6_key-1

MidtermII_Biol202_sec6_key-1 - Name PID Biology 202 section...

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Name______________________PID_________________________ Biology 202 section 6 Midterm II February 27 th , 2008 Time allowed: 50 minutes (9:00 am – 9:50 am) Total points: 100 DO NOT BEGIN EXAM UNTIL 9:00 am DO NOT GO OVER THE ALLOWED TIME Use a simple calculator only Use a non-erasable pen Write your name and PID on each page Signature for Honor Code:____________________________ Section I Multiple choice – choose the BEST answer Estimated time: 25 minutes 2.5 points each, 50 points total Section II Short Answer/Calculations Estimated time: 25 minutes 50 points total
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Name______________________PID_________________________ Part I: Multiple Choice – choose the best answer , 2.5 pts each, estimated time: 1) Lederburg and Tatum took two strains of bacteria, one that could not synthesize methionine and biotin, the other strain could not synthesize threonine, leucine and thiamine. When the two strains were combined and plated on minimal media bacterial colonies grew. The original two strains can be classified as (I)______________, the bacteria that grew on minimal media can be classified as (II)______________ and the process that enabled this is called (III)______________. a) I = allotrophic, II = auxotrophic, III = transformation b) I = protogenic, II = allogenic, III = transduction c) I = auxotrophic, II = allotrophic, III = conjugation d) I = allotrophic, II – prototrophic, III = transduction e) I = auxotrophic, II = prototrophic, III = conjugation f) I = aminotrophic, II = aminocompetent, III = plasmidofusion 2) You analyze the frequency of co-transduction for the bacterial genes A, B, C and D. You get the following pairwise data for frequency of co-transduction i. A & B = 66% ii. A & C = 58 % iii. A & D = 12 % iv. B & C = 15 % v. B & D = 70 % vi. C & D = 2% Map the order of genes A, B, C and D. a) ABCD b) ADCB c) BCDA d) BADC e) CABD f) CBDA g) DABC h) DCBA 3) Organelles with genes include: b) and d) f) a) and d) g) all the above 4) It has been determined that a recessive mutation (g) in the G allele results in green hair. A woman with brown hair and genotype gg and a male with brown hair and genotype GG produce a son with green hair and genotype Gg. You are excited because this is an example of: a) Paternal inheritance b) Transduction c) Maternal effect d) Endosymbiosis e) Mitochondrial inheritance
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Name______________________PID_________________________ f) Recessive epistasis g) Prell
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