DNA replication

Question 1

what is it called when dna is replicated with an original stand

Answer 1

semi-conservative

Question 2

How is DNA replicated

Answer 2

-The enzyme DNA helicase breaks the hydrogen bonds between the bases on the 2 polynucleotides
-Free nucleotides are attracted to their complementary exposed base
-Condensation reaction joins the nucleotides together, the enzyme DNA polymerase catalyses this reaction
-Hydrogen bonds the form between the bases