🧬 Genetic Trait Inheritance Calculator

Calculate genetic probabilities using Punnett squares and inheritance patterns

📊 Inheritance Type

👩 Mother's Genotype

+
Bb
Heterozygous (Brown Eyes)

👨 Father's Genotype

+
Bb
Heterozygous (Brown Eyes)

🎲 Punnett Square Results

B
b
B
BB
Bb
b
Bb
bb

Genotype Probabilities

BB (Homozygous Dominant) 25%
1/4
Bb (Heterozygous) 50%
2/4
bb (Homozygous Recessive) 25%
1/4
Brown Eyes
75%
3 out of 4 offspring
Blue Eyes
25%
1 out of 4 offspring

📚 About Simple Dominant Inheritance

In simple dominant inheritance, one allele (dominant) completely masks the expression of another allele (recessive). An individual needs only one copy of the dominant allele to express the dominant phenotype.

  • Homozygous Dominant (BB): Two dominant alleles, expresses dominant trait
  • Heterozygous (Bb): One of each allele, expresses dominant trait
  • Homozygous Recessive (bb): Two recessive alleles, expresses recessive trait

📁 Saved Genetic Crosses

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