Biology · Genetics
A bacterial transformation co-transduction/co-transformation experiment is performed using two Pneumococcal strains. One strain is resistant to four drugs: A, B, C, and D, whereas the recipient strain is sensitive to all. Following incubation, the mixture is selected on multi-drug media. The observed frequencies indicate high co-transformation rates between certain adjacent markers. The numbers of double/triple/quadruple resistant colonies obtained are: AB=46, AC=640, AD=942, BC=51, CD=786, ABC=30, ABD=42, ACD=630, BCD=36, ABCD=30. Based on these co-transformation patterns, which one of the options represents the most likely linear order of the drug-resistance genes?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A-D-B-C
- 2A-D-C-B✓
- 3A-C-B-D
- 4A-B-C-D
Correct answer
A-D-C-B
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