Mendel's law of segregation is applicable to

Options

A. Dihybrid cross only
B. Both dihybrid and monohybrid crosses
C. Monohybrid cross only
D. Dihybrid but not monohybrid cross

Answer

### Step-by-Step Solution:

1. **Understanding Mendel's Law of Segregation**:
- Mendel's Law of Segregation states that during the formation of gametes, the two alleles for a trait separate from each other. This means that each gamete will carry only one allele for each trait.

2. **Alternate Names**:
- This law is also known as the "Law of Purity of Gametes." This name emphasizes that each gamete is pure, containing only one allele from each gene pair.

3. **Separation of Alleles**:
- During fertilization, the alleles in a pair separate so that each gamete receives only one allele. This separation ensures that traits can be passed on independently to the next generation.

4. **Expression of Traits**:
- Due to the segregation of alleles, a trait that is not expressed in one generation can be expressed in the next. This is because the allele for that trait may be present in the gametes of the offspring.

5. **Applicability**:
- Mendel's Law of Segregation is applicable to both monohybrid and dihybrid crosses.
- **Monohybrid Cross**: Involves one trait (e.g., flower color).
- **Dihybrid Cross**: Involves two traits (e.g., flower color and seed shape).

6. **Conclusion**:
- Therefore, Mendel's Law of Segregation is applicable to the inheritance of traits in both monohybrid and dihybrid crosses.

### Final Answer:
Mendel's Law of Segregation is applicable to both monohybrid and dihybrid crosses.

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