Genetics Terminology

When two different alleles are present, one dominant allele completely hides the recessive allele; only the dominant trait is expressed (seen).

• Complete dominance

• Incomplete dominance

• Codominance

• Polygenic inheritance

A tool used for predicting the genotypes and phenotypes of offspring.

• Punnett Square

• Genetic Ladder

• Chromosome Map

• DNA Sequencer

A copy of a gene.

• Allele

• Chromosome

• Gene Pool

• Genotype

More than two genes code for a single trait, creating more variation in traits.

• Monogenic inheritance

• Polygenic inheritance

• Incomplete dominance

• Codominance

When two different alleles are present, a blended trait is expressed (seen).

• Codominance

• Incomplete dominance

• Complete dominance

• Polygenic inheritance

When two dominant alleles are present, both dominant traits are expressed (seen).

• Codominance

• Incomplete dominance

• Recessive inheritance

• Polygenic inheritance

An observable characteristic.

• Trait

• Feature

• Aspect

• Quality

More than two alleles exist for one trait, creating more variation in traits.

• Polygenic inheritance

• Multiple alleles

• Incomplete dominance

• Codominance