Genetic Trait Calculator

🧬 Trait Selection

Select Trait

Dominant Allele (uppercase)

Recessive Allele (lowercase)

👨 Parent 1 Genotype

Dominant

Recessive

Heterozygous (Dominant Phenotype)

👩 Parent 2 Genotype

Dominant

Recessive

Heterozygous (Dominant Phenotype)

📊 Punnett Square Results

25%

Homozygous Dominant

50%

Heterozygous

25%

Homozygous Recessive

75%

Dominant Trait

Shows dominant phenotype

Genotypic Ratio

1 : 2 : 1

Phenotypic Ratio

3 : 1

Common Human Traits

👁️ Eye Color

Brown (B) dominant over Blue (b)

BB, Bb = Brown | bb = Blue

😊 Dimples

Dimples (D) dominant over No Dimples (d)

DD, Dd = Dimples | dd = No Dimples

🔵 Freckles

Freckles (F) dominant over No Freckles (f)

FF, Ff = Freckles | ff = No Freckles

💇 Widow's Peak

Peak (W) dominant over Straight (w)

WW, Ww = Peak | ww = Straight

👂 Earlobe

Free (E) dominant over Attached (e)

EE, Ee = Free | ee = Attached

👅 Tongue Rolling

Roller (R) dominant over Non-roller (r)

RR, Rr = Can Roll | rr = Cannot