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Home Q & A Board Biology-Related Homework Help Cell Biology
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barry barry
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12 years ago
An Hfr strain of E. coli with the genotype a+b+c+d+e+f+ is mated with an F- auxotrophic strain with the genotype a-b-c-d-e-f-. Conjugation is stopped at 10-minute intervals and the genotypes of the resulting conjugants are determined. The following results are obtained:

After 10 minutes    e+
After 20 minutes    a+e+
After 30 minutes    a+b+e+
After 40 minutes    a+b+d+e+
After 50 minutes    a+b+c+d+e+
After 60 minutes    a+b+c+d+e+f+

What is the correct order of genes on this bacterial chromosome?
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duddyduddy
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