In halpoids, both recessive and dominant limitations express themselves because

Options

A. there is single allele for each trait
B. there are two alleles for each character
C. there are two genes for each character
D. there are many alleles for each trait

Answer

### Step-by-Step Solution:

1. **Understanding Haploids**:
- Haploids are organisms or cells that have only one set of chromosomes. This means that for each gene, there is only one allele (LLA) present.

2. **Alleles in Haploids**:
- In haploids, since there is only one allele for each gene, there is no dominant or recessive allele to mask the expression of the other. This is different from diploids, where one allele can mask the expression of another.

3. **Expression of Traits**:
- Because there is only one allele present for each trait in haploids, both recessive and dominant traits can express themselves. If the allele is dominant, it will express the dominant trait; if it is recessive, it will express the recessive trait.

4. **Implications for Mutation**:
- The presence of only one allele makes haploids particularly useful for studying mutations. Any mutation that occurs will be expressed directly, whether it is a dominant mutation or a recessive one.

5. **Conclusion**:
- Therefore, in haploids, both recessive and dominant limitations express themselves because there is a single allele for each trait, allowing for the expression of any mutation that occurs.