Monohybrid Cross Calculator

Calculate single-trait inheritance patterns with complete dominance, incomplete dominance, and codominance.

Traits
Color Guide: Green (AA) = Homozygous Dominant, Yellow (Aa) = Heterozygous, Red (aa) = Homozygous Recessive
Parents
Parent 1
Parent 2
Punnett Square
Genotype Results
Phenotype Results

Complete Dominance

One allele completely masks the other.

  • AA and Aa show dominant phenotype
  • aa shows recessive phenotype
  • Classic 3:1 ratio in F2 generation
  • Example: Tall vs short pea plants

Incomplete Dominance

Neither allele is fully dominant - blend occurs.

  • AA shows one phenotype
  • Aa shows intermediate blend
  • aa shows opposite phenotype
  • 1:2:1 phenotype ratio
  • Example: Red × White = Pink flowers

Codominance

Both alleles are fully expressed together.

  • AA shows trait A
  • Aa shows both A and a traits
  • aa shows trait a
  • 1:2:1 phenotype ratio
  • Example: AB blood type, roan cattle

X-Linked Inheritance

Calculate X-linked and Y-linked trait inheritance patterns.

Features:

  • X-linked and Y-linked modes
  • Color-coded results by sex
  • Carrier detection
  • Color blindness examples

Try X-Linked Calculator →

Blood Type Calculator

Calculate possible blood types for offspring based on parent blood types.

Features:

  • ABO blood type genetics
  • Rh factor inheritance
  • Visual blood type icons
  • Probability percentages

Try Blood Type Calculator →

Pea Plant Punnett Square

Explore Mendel's famous dihybrid cross experiments.

Features:

  • Color and shape trait combinations
  • Visual pea representations
  • 4×4 Punnett square grid
  • 9:3:3:1 ratio demonstration

Try Pea Plant Calculator →