Monohybrid Cross Calculator

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 →

Dihybrid Cross Calculator

Cross two genes at once and get the classic 9:3:3:1 phenotype ratio on a 4×4 Punnett square.

Try Dihybrid Cross →

Genotype & Phenotype Ratio

Type any cross (Aa, AaBb, AaBbCc) and get the simplified genotypic and phenotypic ratios instantly.

Try Ratio Calculator →

Test Cross Calculator

Reveal whether a dominant-looking organism is homozygous or heterozygous with a test cross.

Try Test Cross →