dna replication exam qs

Question 1

Use your knowledge of semi-conservative replication of DNA to suggest:
1. the role of the single-stranded DNA fragments
2. the role of the DNA nucleotides

Answer 1

  Role of single-stranded DNA fragments
1.   Template;
2.   Determines order of nucleotides/bases;
Role of DNA nucleotides
3.   Forms complementary pairs

Question 2

Humans and grasshoppers have very similar percentages of each base in their DNA
but they are very different organisms.
Use your knowledge of DNA structure and function to explain how this is possible.

Answer 2

Have different genes;
3. (So) different amino acid (sequence / coded for)