What is true of law of independent assortment ?

Options

A. Applicable to all the dominant alleles
B. Applicable to all genes on the same chromosome
C. Not applicable to gene present on the same chromosome
D. Applicable to all recessive alleles

Answer

### Step-by-Step Solution

1. **Understanding the Law of Independent Assortment**:
- The law of independent assortment states that the inheritance of one trait will not affect the inheritance of another trait when two or more traits are being considered. This means that alleles for different traits segregate independently of one another during gamete formation.

2. **Conditions for the Law to Apply**:
- This law is applicable when the genes for the traits being studied are located on different chromosomes. When genes are on different chromosomes, they assort independently during meiosis.

3. **Genes on the Same Chromosome**:
- If genes are located on the same chromosome, they may not assort independently. This is due to the phenomenon known as genetic linkage, where genes that are close together on the same chromosome tend to be inherited together.

4. **Evaluating the Options**:
- Now, let’s evaluate the options given in the question:
- **Applicable to all dominant alleles**: This is incorrect because the law applies to all alleles, not just dominant ones.
- **Applicable to all genes on the same chromosome**: This is incorrect because the law does not apply to genes on the same chromosome.
- **Not applicable to genes present on the same chromosome**: This is correct as it aligns with the explanation of genetic linkage.
- **Applicable to all recessive alleles**: This is also incorrect for the same reason as the dominant alleles.

5. **Conclusion**:
- The correct statement regarding the law of independent assortment is that it is **not applicable to genes present on the same chromosome**.

### Final Answer:
The true statement about the law of independent assortment is that it is **not applicable to genes present on the same chromosome**.

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