bis101m206a - NAME Last First ID BIS101-3 Winter 2006...

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NAME: ID# Last, First BIS101-3 Winter 2006 MIDTERM 2 SHOW ALL WORK TO GET FULL CREDIT . Code of Academic Conduct All members of the academic community are responsible for the academic integrity of the Davis campus. Academic dishonesty is contrary to the purposes of the University and is not to be tolerated. Those who violate campus rules regarding academic misconduct are subject to disciplinary sanctions, including suspension and dismissal. Examples of academic misconduct include: 1) Receiving or providing unauthorized assistance on examinations, 2) Using unauthorized materials during an examination 3) Altering an exam and submitting it for re-grading 4) Using false excuses to obtain extensions of time 5) Taking an exam for another student. Authorization for Public Distribution of Graded Examination and grade posting by ID# I,____________________________ , ID#__________________________ authorize that after this exam is graded, it can be distributed in class or placed in a holding bin, labeled BIS 101-02 in Briggs Hall. 1
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MIDTERM 2 QUESTION VALUE SCORE 1 6 2 10 3 15 4 6 5 10 6 14 7 10 8 9 9 10 10 10 Compensation for grading inconsistencies 4 TOTAL 104 Please read the fine print! Grading policy: Midterm examinations are given a grading credit of 4 points to compensate for grading inconsistencies. According to University policy final examinations cannot be re-graded. If you choose to file a re-grading request, you will loose the grading credit (this does not apply for clerical errors). Only exams written in pen or ink will be accepted for re-grading . You must complete a re-grade petition form explaining in detail your grading problems at 156 Briggs within one week following the distribution of graded exams. 2
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1) In an interrupted mating experiment an Hfr E coli strain transfers four of its genes at the following times to an auxotroph and Lac- F- strain : Gene from Hfr Time (minutes) Ala+ 5 Phe+ 8 Lac + 12 Leu+ 15 a) What is the order of the genes on the bacterial chromosome, starting from the origin of the F factor?: (2) ala phe lac leu b) Assuming that a geneticist has a mixture of bacterial cells of various genotypes. She spreads 5,000 cells on a plate containing complete medium with glucose as a carbon source and without antibiotics. After 24hrs all the cells grew producing 5000 colonies. Then she uses this plate as a master plate in a replica plating experiment onto a minimum medium lactose/ streptomycin (Str) plate supplemented with arginine. List all possible genotypes related to arginine, lactose and Str that will grow on this plate? (2)
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This note was uploaded on 04/16/2008 for the course BIO SCI bis 101 taught by Professor Quiros during the Fall '97 term at UC Davis.

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bis101m206a - NAME Last First ID BIS101-3 Winter 2006...

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