DNA Replication

Question 1

Name two scientist who proposed models of the chemical structure of DNA and of DNA replication

1 mark

Answer 1

Watson and Crick

Question 2

Using your knowledge of semi conservative replication of DNA to suggest

1. The role of single stranded DNA fragments
2. The role of the DNA nucleotides

3 marks

Answer 2

1)
1. Template
2. Determine order of nucleotides/ bases

2)
3. Forms complementary pairs /
A-T, C-G
Or
Forms complementary DNA strand

Accept sequence / chain for strand