In which type of inheritance the results are affected by reciprocal cross :-

Options

A. nuclear
B. Cytoplasmic
C. Blending
D. All the above

Answer

### Step-by-Step Solution:

1. **Understanding Reciprocal Cross**: A reciprocal cross is a breeding experiment where two different parental phenotypes are crossed in two different ways. For example, if we have a male with a certain trait and a female without that trait, the first cross would be male (trait) x female (no trait). The second cross would be female (trait) x male (no trait). This helps in determining if the inheritance pattern is influenced by the sex of the parents.

2. **Identifying Types of Inheritance**: The question asks about the type of inheritance where results are affected by reciprocal crosses. The main types of inheritance to consider include:
- Nuclear inheritance
- Cytoplasmic inheritance
- Blending inheritance
- Sex-linked inheritance

3. **Analyzing Cytoplasmic Inheritance**: Cytoplasmic inheritance refers to the transmission of genes located in the cytoplasm (usually in organelles like mitochondria or chloroplasts) rather than in the nucleus. In this case, traits are typically inherited from the female parent because the cytoplasm of the zygote comes primarily from the egg cell.

4. **Impact of Reciprocal Cross on Cytoplasmic Inheritance**: In cytoplasmic inheritance, the results of reciprocal crosses are affected because the cytoplasm (and thus the traits associated with it) is contributed unequally by the parents. Therefore, if a trait is cytoplasmically inherited, the offspring will show different phenotypes depending on whether the mother or father carries the trait.

5. **Conclusion**: Based on the analysis, the type of inheritance where the results are affected by reciprocal crosses is **cytoplasmic inheritance**.

### Final Answer:
Cytoplasmic inheritance