[[Unit 2 Genetic Processes]]
Mutation is any change to DNA in a cell.
If a mutation occurs in a germ cell, it well get passed on to the next generation.
Mutations aren't necessarily a detriment, it can also be beneficial or have no effect (silent mutations).

Four main types of chromosome changes are:
- Deletion, where a segment is deleted from the chromosome.
- Translocation, which is crossover between non homologous chromosomes
- Inversion, where a section is inverted 180 degrees.
- Duplication, where a section is repeated.