Dna Replication

Question 1

What does the semi - conservative replication of dna ensure

Answer 1

Genetic continuity between generations of cells

Question 2

What is the semi-conservative theory

Answer 2

Strand of dna replicates resulting in 2 DNA molecules with one original strand and one new strand

Question 3

Describe the process of semi conservative dna replication

Answer 3

1. DNA helicase causes strands to unwind by breaking hydrogen bonds, forming a replication fork
2. Each exposed strand acts as a template to which complimentary free nucleotides are attracted
3. DNA polymerase helps join adjacent nucleotides (condensation reaction)and a sugar-phosphate backbone is formed + h bonds between complementary bases are formed
4. DNA ligase seals strand
5. Each new DNA molecule contains one original strand and one new strand