From the Stage 2 SACE Biology course outline, this video discusses:
- Changes in the DNA sequence are called ‘mutations’.
- Mutations in genes and chromosomes can result from errors in DNA replication or cell division, or from damage by physical or chemical factors in the environment.
- Mutation rate can be increased by:
– ionising radiation
– mutagenic chemicals
– viruses.
• Explain how inheritable mutations can lead to changes in the characteristics of the descendants.
• Compare the different potential consequences of mutations in germ cells and somatic cells.
