Download your Word document
Trihybrid Cross Probability Calculator result sheet — free, supported by sponsors. Your download button appears in 20 seconds.
This free download is supported by sponsors — continuing in
20
Your file is generated in your browser when you choose Download — nothing is uploaded. If this calculator returns enough numeric data, the export also includes its best-fit chart alongside the readable table.
WorldCalculate result export
Trihybrid Cross Probability Calculator — result sheet
Calculate the eight dominant and recessive phenotype probabilities for three independently assorting traits from six parent genotype inputs.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: For each trait, probability of a dominant phenotype = 1 − (probability parent 1 contributes the recessive allele × probability parent 2 contributes the recessive allele); each three-trait phenotype probability is the product of its three independent trait probabilities.
A 4 × 4 dihybrid grid becomes a 16 × 16 grid for a trihybrid cross, so the calculator uses the equivalent product rule and reports all eight phenotype classes. The result assumes simple dominant/recessive expression and independent assortment; it is an educational probability model, not a prediction of every biological inheritance pattern.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Parent 1 — trait A genotype — 3 choices
- Parent 2 — trait A genotype — 3 choices
- Parent 1 — trait B genotype — 3 choices
- Parent 2 — trait B genotype — 3 choices
- Parent 1 — trait C genotype — 3 choices
- Parent 2 — trait C genotype — 3 choices
Worked example
| Input | Value |
|---|---|
| Parent 1 — trait A genotype | Aa |
| Parent 2 — trait A genotype | Aa |
| Parent 1 — trait B genotype | Aa |
| Parent 2 — trait B genotype | Aa |
| Parent 1 — trait C genotype | Aa |
| Parent 2 — trait C genotype | Aa |
For three heterozygous crosses, A_B_C_ is 42.1875%, the three one-recessive classes are 14.0625% each, the three two-recessive classes are 4.6875% each, and aabbcc is 1.5625%.
Assumptions and limits
- Each locus has two alleles and the uppercase allele is treated as dominant for the displayed phenotype labels.
- The three loci assort independently and are not modeled as linked genes.
- The parent genotype choices are treated as known and each parent contributes one allele at random.
- Incomplete dominance, codominance, epistasis, sex linkage, mutation, viability selection, and environmental effects are outside the model.
- Probabilities describe expected proportions over many offspring, not a guarantee for one offspring.
- Use the result for genetics learning and check a biological question with an instructor or genetic counselor when appropriate.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
No saved result was found. Please run the calculation first, then choose Download again.