Which step in PCR (polymerase chain reaction) is responsible for opening and unwinding the DNA strand to be analyzed? A) binding
B) elongation
C) denaturation
D) annealing

Dwarf galaxies are select one: a. relatively rare. b. not very bright c. mostly spiral shaped. d. none of these.

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae