How to use the trihybrid cross probability calculator
Find the chance of all dominant phenotypes in a cross involving several independent genes. Enter number of independent genes in the field above; the probability all dominant, probability all recessive, genotype combinations are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “trihybrid cross probability”, “probability of all dominant traits”, “number of genotypes”, “calculate trihybrid cross probability”, “find probability all dominant”.
Formula
Variables
- n — Number of independent genes
Worked example
With number of independent genes = 3, the calculator gives probability all dominant ≈ 42.1875 %; probability all recessive ≈ 1.5625 %; genotype combinations ≈ 27 count.
Frequently asked questions
What is the trihybrid cross probability calculator used for?
Find the chance of all dominant phenotypes in a cross involving several independent genes. It helps with questions such as “trihybrid cross probability”, “probability of all dominant traits”, “number of genotypes”.
What is the formula for the trihybrid cross probability calculation?
Probability all dominant (%) = 100 × (3 / 4)^n. Probability all recessive (%) = 100 × (1 / 4)^n. Genotype combinations (count) = 3^n. Here n is number of independent genes.
What inputs do I need for the trihybrid cross probability calculator?
You need number of independent genes. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the trihybrid cross probability calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the trihybrid cross probability result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.