Haploids are more suitable for mutation studies than the diploids. This is because

Options

A. All mutations, whether dominant or recessive are expressed in haploid
B. Haploids are reproductively more stable than diploids
C. Mutagens penetrate in haploids more effectively than diploids
D. Haploids are more abundant in nature than diploids

Answer

### Step-by-Step Solution:

1. **Understanding Ploidy**:
- Ploidy refers to the number of sets of chromosomes in a cell.
- Haploid cells (n) contain one set of chromosomes, while diploid cells (2n) contain two sets of chromosomes.

2. **Defining Haploid and Diploid**:
- Haploid cells are typically gametes (sperm and egg cells) that participate in sexual reproduction.
- Diploid cells are somatic cells that contain two sets of chromosomes, one inherited from each parent.

3. **Mutations and Their Expression**:
- A mutation is a change in the DNA sequence that can affect the traits of an organism.
- In diploid organisms, mutations can be masked by the presence of a second allele (the other copy of the gene), especially if it is dominant.

4. **Why Haploids are More Suitable for Mutation Studies**:
- In haploids, there is only one allele for each gene. This means any mutation (whether dominant or recessive) will be expressed without any masking effect from a second allele.
- This allows researchers to observe the effects of mutations directly, making haploids more suitable for mutation studies.

5. **Conclusion**:
- Therefore, haploids are more suitable for mutation studies than diploids because all mutations, whether dominant or recessive, are expressed in haploid organisms.