Character
heritable feature that varies among individuals
Trait
variant for a character
True-breeding
produces offspring identical to parent
Monohybrid cross
cross of two individuals differing in a single character
Law of segregation
allele pairs separate from each other during production of gametes
Dihybrid
cross of two individuals differing in two characters
Law of independent assortment
inheritance of one character has no effect on inheritance of the other
Incomplete dominance
neither allele is dominant over the other
Pleiotropy
one gene influences many characteristics
Polygenetic inheritance
single phenotypic character results from the additive effects of two or more genes