The attachment of nucleotides to form a complementary strand of DNA during replication
a.
is accomplished only in the presence of tRNA.
b.
is accomplished by DNA polymerase.
c.
prevents separation of complementary strands of RNA.
d.
is the responsibility of the proofreading enzymes.
Explanation: DNA polymerase is an enzyme that catalyzes the synthesis of a complementary strand of a DNA molecule during replication. The double stranded DNA helix is first unwind by the enzyme known as helicase giving rise to two DNA strands which serve as templates for replication. DNA polymerase then binds to a primer, a short nucleotide sequence and catalyzes the attachment of nucleotides to the primer to form a growing strand that is complementary to the parent DNA.
