The theory of blending inheritance was shown to be false by Mendel's observations of dominant and recessive alleles.

Blending Inheritance

An outdated theory of heredity proposing that the traits of offspring are a uniform blend of the parents' traits.

Dominant Alleles

Alleles that mask the effect of other alleles for the same gene in heterozygous individuals, determining the phenotype.

Recessive Alleles

Genetic variations that must be present in two copies (homozygous) to express a trait, as opposed to dominant alleles that require only one copy.