Genotype

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 genes in the genotype.