An individual of blood group A has

Options

A. antigen A in the RBCs and anti-B antibodies in plasma
B. antigen B in the RBCs and anti-A antibodies in plasma
C. antigen A in the plasma and anti-B antibodies in RBCs
D. antigen A and anti-B antibodies in RBCs

Answer

To determine the characteristics of an individual with blood group A, we need to analyze the presence of antigens and antibodies in their blood. Here’s a step-by-step breakdown:

### Step 1: Identify the Antigens Present
- Blood group A individuals have **A antigens** present on the surface of their red blood cells (RBCs).

### Step 2: Identify the Antibodies Present
- In the plasma of blood group A individuals, there are **anti-B antibodies**. This means that they produce antibodies against B antigens.

### Step 3: Summary of Blood Group A Characteristics
- Therefore, an individual with blood group A has:
- **Antigen A** on their RBCs
- **Anti-B antibodies** in their plasma

### Step 4: Conclusion
- The presence of A antigens and anti-B antibodies is crucial for understanding blood transfusions and compatibility. Blood group A individuals can receive blood from group A and O but cannot receive blood from group B or AB due to the presence of anti-B antibodies.