1. What is Dihybrid Cross Probability?

Dihybrid cross probability calculates the chance of offspring inheriting particular combinations of two traits. It's based on Mendel's principle of independent assortment.

2. How Does the Calculator Work?

The calculator uses the dihybrid cross probability formula:

Where:

• \( P \) — Probability (dimensionless)
• \( F \) — Favorable outcomes (dimensionless, 0-16)

Explanation: In a dihybrid cross (AaBb × AaBb), there are 16 possible genotype combinations in the offspring. The probability is the ratio of favorable combinations to total possible combinations.

3. Importance of Dihybrid Cross

Details: Understanding dihybrid crosses is fundamental in genetics for predicting inheritance patterns of two traits simultaneously. It demonstrates Mendel's law of independent assortment.

4. Using the Calculator

Tips: Enter the number of favorable genotype combinations (0-16). The calculator will compute the probability as both a fraction and percentage.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 16?
A: There are 4 possible gametes from each parent (AB, Ab, aB, ab) and 4×4=16 possible combinations in offspring.

Q2: What's the difference between monohybrid and dihybrid?
A: Monohybrid looks at one trait (2×2=4 combinations), dihybrid examines two traits (4×4=16 combinations).

Q3: How do I determine favorable outcomes?
A: Count how many squares in a 4×4 Punnett square match your desired genotype or phenotype combination.

Q4: Does this work for linked genes?
A: No, this assumes genes are on different chromosomes and assort independently.

Q5: What about incomplete dominance?
A: The basic 16:9:3:3:1 ratio changes with non-Mendelian inheritance patterns.