Contents
Key Stage 4
Meaning
A genotype is a set of genes responsible for a particular physical characteristic.
About Genotypes
- The genotype of two identical twins is the same.
- A different genotype in two organisms can result in the same phenotype. For example two people may both have a phenotype of brown eyes but one has a genotype containing two copies of the allele for brown eyes while the other may have one copy of the allele for blue eyes.
- The phenotype is determined by the dominant alleles in the genotype.
References
AQA
- Genotype, page 217, GCSE Combined Science Trilogy; Biology, CGP, AQA
- Genotype, page 254-9, GCSE Biology; Student Book, Collins, AQA
- Genotype, page 265, GCSE Biology, CGP, AQA
- Genotypes, page 70, GCSE Combined Science; The Revision Guide, CGP, AQA
- Genotypes, page 91, GCSE Biology; The Revision Guide, CGP, AQA
- Genotypes, pages 208-213, 234-235, GCSE Biology; Third Edition, Oxford University Press, AQA
- Genotypes, pages 36, GCSE Combined Science Trilogy 2, Hodder, AQA