Purebred vs. hybrid

Recessive

An allele that is masked when a dominant allele is present

Dominant

An allele whose trait always shows up in the organism when the allele is present

Hybrid

An organism that has two different alleles for a trait; an organism that is heterozygous for a particular trait

Genotype

An organisms genetic makeup, or allele combination

Phenotype

An organisms physical appearance or visible traits

Homozygous

Having two identical alleles for a trait

Codominance

When both alleles can be observed in a phenotype

Incomplete dominance

When the offsprings phenotype is a combination of the parents phenotypes

Purebred

The offspring of many generations that have the same traits