Science glossary film: Phenotype

The physical and behavioural characteristics of an individual. The phenotype is the observable way genes are expressed: for example, an individual may have alleles for both blue and brown eye colour in their genotype, but would express the dominant allele only and have a phenotype of brown eyes.

The phenotype is the observable way genes are expressed: for example, an individual may have alleles for both blue and brown eye colour in their genotype, but would express the dominant allele only and have a phenotype of brown eyes.