complete dominance

incomplete dominance

codominance

incomplete penetrance

expressivity

compound heterozygote

2. Why is it impossible to produce true-breeding yellow mice (that is, strains of mice that produce only yellow individuals generation after generation)?

Why are individuals with Type O blood considered to be the "universal donor" and why are individuals with type AB blood considered to be "universal recipients"?

epistasis

complementation

sex-influenced traits

sex-limited traits

cytoplasmic inheritance

genomic imprinting

pleiotropy