Explain why, in theory, knowing a DNA sequence should allow you to identify the sequence of amino acids in the protein that the DNA sequence codes for. Also explain why in practice this doesn't always provide the correct sequence of amino acids in the protein.

Overview of A Level in Biology A:

Content is split into six teaching modules:
Module 1 – Development of practical skills in biology
Module 2 – Foundations in biology
Module 3 – Exchange and transport
Module 4 – Biodiversity,evolution and disease
Module 5 – Communication,homeostasis and energy
Module 6 – Genetics,evolution and ecosystems