Name a blood related autosomal Mendelian disorder. Why is it called Mendelian disorder? How is the disorder tansmitted from parents to offsprings?

Explanation

### Step-by-Step Solution:

1. **Identify a Blood-Related Autosomal Mendelian Disorder**:
- One well-known example of a blood-related autosomal Mendelian disorder is **sickle cell anemia**.

2. **Explain Why It Is Called a Mendelian Disorder**:
- A disorder is termed a Mendelian disorder when it is caused by a mutation in a single gene rather than by the absence or addition of an entire chromosome. In the case of sickle cell anemia, the disorder arises due to a defect in the gene that codes for the beta globin chain of hemoglobin.

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