Simple inheritance

Genotype

the genetic makeup of an individual

Phenotype

The physical expression of an individual’s genes

Punnett Square

a square diagram that can be used to predict the genotype of offspring

Probability

the likelihood of an event occurring

Homozygous dominant

having two of the same dominant alleles

Homozygous recessive

having two different alleles of the same gene

Carrier

an individual who carries the recessive allele but does not show the trait.

Codominance

Heterozygous individual with the characteristics of both parents

Incomplete dominance

Heterozygotes show traits of both dominant and recessive alleles merged together

Constructing punnet squares