Idea or model
Phenotype
Observable traits such as height or blood type, shaped by both genotype and environment.
Genotype
The particular variants an individual carries at a location in the genome, often written as letters such as Bb.Source: NHGRI
Idea or model
How Genotype connects
Genotype shapes
Genotype is used by
Idea or model
Punnett square
A grid that predicts the possible offspring genotypes from a cross between two parents.
Genotype is related to
Idea or model
Allele
One of two or more versions of a DNA sequence at the same place in the genome. You inherit one from each parent.
Studied in
Your progress
Sources & further reading
The explanations on this page are our own summaries of these sources. Follow a link to read the original; if anything here disagrees with it, the original wins. How we choose and check sources.
Genotype (opens the original in a new tab)
National Human Genome Research Institute. Talking Glossary of Genomic and Genetic Terms. National Human Genome Research Institute, NIH.
ReferenceGovernment sourceEducational