Question

Dihybrid ratio is a product of two monohybrid ratios. Which principle of statistics did Mendel apply here?

• A. Standard deviation
• B. Mode
• C. Median
• D. Probability

Hint:

Independent events follow multiplication rule of probability.

Answer 1

The Correct Option is D

Step 1: Understanding dihybrid cross.
In a dihybrid cross, two pairs of contrasting characters are studied simultaneously, and each pair segregates independently.
Step 2: Statistical principle applied.
Mendel calculated the dihybrid ratio (9:3:3:1) by multiplying the probabilities of two independent monohybrid ratios (3:1 × 3:1).
Step 3: Conclusion.
Thus, Mendel applied the principle of probability.