GATE XL · 2025 · XL-S
Question 84: Methods in Microbiology
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Question 84
XL-SNAT2 marksNeeds review
A polymerase chain reaction (PCR) based diagnosis test was performed on a bacterial sample targeting a specific gene. There are 3 copies of this gene in the bacterial genome. Prior to DNA extraction, the bacteria were incubated to allow one cycle of growth. 3072 amplicon copies were obtained after 9 cycles of the PCR. Assume 100% efficiency at each step.
The initial bacterial count in the sample was ________.
(Answer in integer)
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2025XL-S
GATE XL 2025 · Paper 1
Life Sciences · Original paper archive
- Section
- Section XL-S
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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