The polymerase chain reaction (PCR):
a) enables researchers to determine the sequence of a complementary strand of DNA when they have only single-stranded DNA.
b) makes it possible to create huge numbers of copies of tiny pieces of DNA
c) utilizes RNA polymerase to build strands of DNA.
d) can create messenger RNA molecules from small pieces of DNA.
e) all of the answers are correct

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions,because prokaryotes don't have nuclei.

Wich level of organization includes all the other levels or organizations

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f