Genetics Vocabulary

Having two identical alleles of a particular gene or genes.

A trait that is masked by the dominant trait and only appears if two recessive alleles for the same characteristic are inherited.

DNA segments found on chromosomes that determine the inheritance of a particular trait.

A structure found in the nucleus of the cell that contains genetic information (DNA).

The genetic makeup of an organism.

A trait that is expressed or seen when at least one dominant allele is present.

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

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

An organism that has two different alleles for a particular trait.

A specific characteristic of an organism, which can be influenced by genes and the environment.