Which of the following laws do not show any deviation ?

Options

A. Law of dominance
B. Law of purity of gametes
C. Law of independent assortment
D. None

Answer

To determine which of the following laws do not show any deviation, we will analyze three Mendelian laws: the Law of Dominance, the Law of Purity of Gametes, and the Law of Independent Assortment.

### Step-by-step Solution:

1. **Understand the Law of Dominance**:
- The Law of Dominance states that in a heterozygous condition, the dominant allele will mask the effect of the recessive allele. This means that the dominant trait will always be expressed phenotypically.
- **Conclusion**: This law can show deviations, especially in cases of incomplete dominance or co-dominance where both alleles can express their traits.

**Hint**: Consider situations where both alleles contribute to the phenotype.

2. **Understand the Law of Purity of Gametes**:
- The Law of Purity of Gametes states that during gamete formation, the alleles segregate so that each gamete carries only one allele for each gene. This means that pure lines produce pure gametes consistently.
- **Conclusion**: This law does not show deviations, as the gametes produced from a homozygous organism will always be pure.

**Hint**: Think about how gametes are formed from homozygous parents.

3. **Understand the Law of Independent Assortment**:
- The Law of Independent Assortment states that alleles of different genes assort independently of one another during gamete formation. This means that the inheritance of one trait does not affect the inheritance of another.
- **Conclusion**: This law can show deviations due to gene linkage, where genes located close to each other on the same chromosome tend to be inherited together.

**Hint**: Consider how genes on the same chromosome might not assort independently.

### Final Answer:
The law that does not show any deviation is the **Law of Purity of Gametes**.