Which statement is correct about polygenic inheritance :

Options

A. One character is controlled by many genes
B. Characters controlled by cytogenes
C. Two pair of allelic genes are essential in dominant form to produce a particular character
D. Gene which inhibit the expression of another non allelic gene

Answer

**Step-by-Step Solution:**

1. **Understanding Polygenic Inheritance**:
- Polygenic inheritance refers to the phenomenon where a single trait is controlled by multiple genes. This means that more than two alleles or genes influence the expression of a particular character or trait.

2. **Analyzing the Statements**:
- **Statement 1**: "One character is controlled by many genes."
- This statement is correct as it aligns with the definition of polygenic inheritance.
- **Statement 2**: "Character is controlled by cytogenes."
- This statement is incorrect. Cytogenes refer to genes located in the cytoplasm, while polygenic inheritance involves genes located in the nucleus.
- **Statement 3**: "Two pairs of allelic genes are essential in dominant form to produce a particular character."
- This statement is also incorrect. In polygenic inheritance, a single dominant allele from one pair can influence the trait, regardless of the form of the other alleles.
- **Statement 4**: "Gene which inhibit the expression of another non-allelic gene."
- This statement is incorrect as it describes epistasis, not polygenic inheritance.

3. **Conclusion**:
- The only correct statement regarding polygenic inheritance is Statement 1: "One character is controlled by many genes."

**Final Answer**: The correct statement about polygenic inheritance is: "One character is controlled by many genes."

---