Incomplete Dominance: Heterozygote is a BLEND (e.g., Red x White = Pink)
Codominance: Both alleles are fully expressed (e.g., Red x White = Red/White spots, AB Blood)
Multiple Alleles: More than two alleles exist in the population (e.g., Blood types: Iᴬ, Iᴮ, i)
Tags
Punnett SquareHeredityCodominanceIncompleteBlood Type
Inheritance Pattern
In Incomplete Dominance, neither allele is completely dominant. Crossing a homozygous Red flower (CR CR) with a homozygous White flower (CW CW) produces 100% Pink heterozygotes.
Interactive Punnett Square
Mendelian vs Non-Mendelian
Mendel’s rules stated one allele perfectly masks the other (Tall masks Short). Non-Mendelian patterns prove the genotype-to-phenotype mapping is much more complex.