BRAINCAKEGenetic Causes of Variation - Mutation
Mutations are changes to the DNA base sequence that result in changes to the amino-acid sequence of proteins.
This may lead to different phenotypes. If a mutation occurs in the gametes it may be passed to the offspring.
As a result of mutations, there are different versions of the same genes, called alleles
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Key terms in this lesson
- gene
- A length of DNA that codes for a specific polypeptide.
More in Classification and Evolution
- Palaeontology
- Comparative Anatomy
- Comparative Biochemistry
- Types of Variation
- Genetic Causes of Variation - Meiosis and Chance
- Environmental Causes of Variation
- Discontinuous Variation
- Continuous Variation
All 36 lessons in Classification and Evolution · All OCR AS-level Biology topics