Four E. coli strains of genotype atb¯ are labeled 1, 2, 3, and 4. Four strains of genotype a¯b* are labeled 5, 6, 7, and 8. The two genotypes are mixed in all possible combinations and, after incubation, are plated to determine the frequency of a*b+ recombinants. The following results are obtained, where M=many recombinants, L=low number of recombinants, and 0=no recombinants: 1 3 4 M M 6. M M L M 8 L L Based on these results, assign a sex type to each strain. Answer Bank 2 F- Hfr F+ 3 4

Four E. coli strains of genotype atb¯ are labeled 1, 2, 3, and 4. Four strains of genotype a¯b* are labeled 5, 6, 7, and 8. The two genotypes are mixed in all possible combinations and, after incubation, are plated to determine the frequency of a*b+ recombinants. The following results are obtained, where M=many recombinants, L=low number of recombinants, and 0=no recombinants: 1 3 4 M M 6. M M L M 8 L L Based on these results, assign a sex type to each strain. Answer Bank 2 F- Hfr F+ 3 4

Basic Clinical Laboratory Techniques 6E

6th Edition

ISBN:9781133893943

Author:ESTRIDGE

Publisher:ESTRIDGE

Chapter3: Basic Hemostasis

Section3.6: D-dimers

Problem 1.2CS

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