Key words and Phrases in Genetics Problems

True-breeding: homozygous (AA or aa)

Parental generation: homozygous for opposing traits  (AA and aa)

Purebred: homozygous (AA or aa)

…had the same trait for several generations.. : probably homozygous (AA or aa)

hybrid: heterozygous (Aa)

F1: heterozygous (Aa)

Inbred : homozygous (AA or aa)

Gamete: use FOIL

Carrier : heterozygous (Aa)

Phenotype : physical appearance (words describing the trait)

Genotype : alleles present (letters)

Test cross: a cross done to determine the second allele in an individual with the
     dominant phenotype

Phenotype of F2 in monohybrid cross is 3:1

Phenotype of F2 in dihybrid cross is 9:3:3:1

If 3 traits are possible from only 2 alleles, the type of inheritance involved is
     incomplete dominance