What is a mutation and what are they caused by?
A mutation is a change in the base sequence of DNA. A mutation can be caused by a mistake during replication of DNA or by mutagenic agents. Mutagenic agents include chemicals that can act as bases or radiation that can alter the DNA sequence.
NK
Related Biology A Level answers
All answers ▸Explain what is meant by epigenetics and how it can inhibit transcription.
Outline the key structural differences between mRNA and DNA molecules and how do these contribute to their different functions?
Describe the five stages of phagocytosis of a bacterium by a neutrophil
Describe the passage of blood through the left side of the heart. Include the names of the valves between the chambers.