Genetics Vocabulary

A special chart used to show possible gene combinations.

Segment of DNA found in chromosomes that give instructions for producing a certain characteristic.

The trait represented by a lower case letter.

Chance or possibility that an event will take place.

The blending of two different alleles to create a third unique phenotype. Example: Snapdragon: red X white --> pink.

The trait represented by an upper case letter that masks the effect of a recessive allele.

Different forms of a gene that can exist at a specific locus.

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

The genetic constitution of an individual, often represented by letters (e.g., AA, Aa, aa).

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive. Example: AB blood type.