Not all traits are simply inherited by dominant and recessive alleles (Mendelian Genetics). In some traits, neither allele is dominant or many alleles.
Cross homozygous dominant tall plant and a heterozygous tall plant.
Alternative Patterns of Inheritance. Incomplete Dominance Heterozygote creates a new phenotypic trait that is in between the dominant and the recessive.
Complex Patterns of Inheritance
Patterns of Heredity
Different inheritance patterns