Assertion `:` Most of the human haemoglobin in our body has `2 alph` and `2 beta` polypeptide chains.
Reason `:` Haemoglobin is a conjugate protein and has 4 polypeptide chain in its globin protein

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "most of the human hemoglobin in our body has 2 alpha and 2 beta polypeptide chains." This is true. Human hemoglobin (specifically hemoglobin A) is composed of two alpha (α) chains and two beta (β) chains.

2. **Understanding the Reason**: The reason provided is that "hemoglobin is a conjugate protein and has 4 polypeptide chains in its globin protein." This is also true. Hemoglobin is classified as a conjugate protein because it consists of both protein (globin) and a non-protein component (heme).

3. **Analyzing the Structure of Hemoglobin**: Hemoglobin is made up of four polypeptide chains: two alpha chains and two beta chains. Each of these chains is associated with a heme group, which contains iron and is responsible for oxygen binding.

4. **Connecting the Assertion and Reason**: The reason explains why the assertion is true. The structure of hemoglobin, being a conjugate protein with four polypeptide chains, directly supports the assertion that it contains two alpha and two beta chains.

5. **Conclusion**: Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the answer is that both the assertion and reason are correct, and the reason is a correct explanation of the assertion.

### Final Answer:
Both the assertion and reason are true, and the reason correctly explains the assertion.

---