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Taq DNA polymerase used in PCR is obtained from:
AThermus aquaticus (hot-spring bacterium)
BE. coli (intestinal bacterium)
CBacillus thuringiensis (soil bacterium)
DSaccharomyces cerevisiae (yeast)
Answer & Solution
Correct answer: A. Thermus aquaticus (hot-spring bacterium)
Taq polymerase comes from THERMUS AQUATICUS, a bacterium living in hot springs. It is heat-stable (active at 72°C and survives 94°C denaturation), making automated PCR possible.
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