SuperCalX

Trihybrid Cross Calculator

Calculate genotype and phenotype ratios for a trihybrid cross (3 traits).
Calculator
Enter your values
Results

Phenotype Ratios (Top 8)

  • ABC:27/64 (42.2%)
  • ABc:9/64 (14.1%)
  • AbC:9/64 (14.1%)
  • aBC:9/64 (14.1%)
  • Abc:3/64 (4.7%)
  • aBc:3/64 (4.7%)
  • abC:3/64 (4.7%)
  • abc:1/64 (1.6%)
Total: 64 possible offspring combinations
Trihybrid Cross Analysis
Three-trait inheritance complexity

Complexity

A trihybrid cross involves 3 independent traits, producing 64 possible offspring combinations. This demonstrates the multiplicative nature of genetic inheritance.

Classic Ratio

For AaBbCc x AaBbCc, the expected phenotypic ratio is 27:9:9:9:3:3:3:1, representing all combinations of dominant and recessive traits.

Practical Applications

Trihybrid crosses are used in advanced breeding programs and genetic studies to understand multi-trait inheritance patterns and gene linkage.

How to Use

Step-by-step instructions
  1. 1Enter the 6-letter genotype for Parent 1 (e.g., AaBbCc).
  2. 2Enter the 6-letter genotype for Parent 2.
  3. 3The calculator will compute genotype and phenotype counts.

Mendelian Inheritance

A trihybrid cross tracks 3 independent traits. The Punnett square has 64 cells.
27:9:9:9:3:3:3:1 Ratio (heterozygous)

Variables:

A, B, CDominant alleles
a, b, cRecessive alleles

Example

Heterozygous Cross

Inputs:

P1:AaBbCc
P2:AaBbCc

Steps:

  1. 1.8 gametes from each parent
  2. 2.64 offspring combinations
  3. 3.Classic 27:9:9:9:3:3:3:1 phenotypic ratio
Result:
27:9:9:9:3:3:3:1

Frequently Asked Questions

Why is the grid not shown?

A trihybrid cross produces an 8x8 grid with 64 cells, which is too large to display clearly. The calculator shows the summary statistics instead.