1. What is a Trihybrid Cross?

A trihybrid cross is a genetic cross between two organisms that are heterozygous for three different traits. It helps predict the probability of offspring inheriting certain combinations of traits.

2. How Does the Calculator Work?

The calculator uses the probability formula:

Where:

• \( P \) — Probability (0 to 1)
• \( F \) — Number of favorable outcomes (0 to 64)
• 64 — Total possible combinations in a trihybrid cross (4×4×4)

Explanation: For each of the three traits, there are 4 possible combinations, making 64 total possible outcomes (4×4×4).

3. Understanding Probability

Details: Probability tells us how likely something is to happen. In genetics, it helps predict what traits offspring might have.

4. Using the Calculator

Tips: Enter the number of favorable outcomes (from 0 to 64). The calculator will show the probability as a fraction and percentage.

5. Frequently Asked Questions (FAQ)

Q1: Why 64 possible outcomes?
A: For each trait, there are 4 possible combinations (AA, Aa, aA, aa). With three traits, it's 4×4×4 = 64.

Q2: What's a heterozygous organism?
A: It has two different alleles for a trait (like Aa), unlike homozygous which has two same alleles (AA or aa).

Q3: How can I find the number of favorable outcomes?
A: Count how many boxes in a 4×4×4 Punnett square show the trait combination you're interested in.

Q4: What does probability of 0.5 mean?
A: It means there's a 50% chance (or 1 in 2 chance) of that outcome happening.

Q5: Can probability be more than 1?
A: No! Probability always ranges from 0 (never happens) to 1 (always happens).