Examlex
Which of the following best describes the complete sequence of steps occurring during every cycle of PCR?
1) The primers hybridize to the target DNA.
2) The mixture is heated to a high temperature to denature the double-stranded target DNA.
3) Fresh DNA polymerase is added.
4) DNA polymerase extends the primers to make a copy of the target DNA.
United States
A country in North America consisting of 50 states and a federal district, known for its significant influence on global politics, economy, and culture.
Group Marriage
A marital arrangement where more than two individuals enter into a marital relationship, sharing domestic, financial, and often parental responsibilities.
Eskimos
A term historically used for indigenous peoples inhabiting the circumpolar regions of Greenland, Canada, and Alaska, though some consider it outdated or pejorative.
Northern Alaska
A vast and largely unpopulated region of Alaska, characterized by its Arctic climate and significant indigenous cultures.
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