What should be the minimum number of traits taken into consideration to prove Mendel's law of independent assortment

Options

A. One
B. Two
C. Three
D. Four

Answer

To determine the minimum number of traits required to prove Mendel's law of independent assortment, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Mendel's Law of Independent Assortment**:
Mendel's law states that the inheritance of one trait will not affect the inheritance of another trait. This means that traits are passed on independently of each other.

2. **Identifying Traits for the Cross**:
To demonstrate this law, we need to consider individuals that differ in at least two traits. For example, if we take a pea plant that is tall (T) and yellow (Y) and cross it with a short (t) and green (y) plant, we can observe how these traits are inherited.

3. **Conducting a Dihybrid Cross**:
A dihybrid cross involves two traits. In this case, we can track the inheritance of both height (tall vs. short) and seed color (yellow vs. green). The offspring will show combinations of these traits, which allows us to see if they assort independently.

4. **Conclusion**:
Since we need to observe the inheritance of two different traits to prove that they assort independently, the minimum number of traits that must be considered is **2**.

### Final Answer:
The minimum number of traits taken into consideration to prove Mendel's law of independent assortment is **2**.

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