Digital ACT Science Practice Question #1530
Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.
PCR doubles DNA each round: 2^n.
PCR doubles target DNA in each cycle: 2^10 ~= 1,024; 2^20 ~= 1.05 x 10^6; 2^30 ~= 1.07 x 10^9....
Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...
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