What is a centromere? How does the position of centromere form the basis of classification of chromosomes. Support your answer with a diagram showing the position of centromere on different types of chromosomes.

Explanation

### Step-by-Step Text Solution:

**Step 1: Definition of Centromere**
A centromere is a specialized region of a chromosome that plays a crucial role during cell division. It is often referred to as the primary constriction of the chromosome. The centromere is a narrow, lightly stained area where two sister chromatids are joined together.

**Step 2: Importance of Centromere Position**
The position of the centromere on a chromosome is fundamental for the classification of chromosomes. Based on the location of the centromere, chromosomes can be categorized into four types: metacentric, submetacentric, acrocentric, and telocentric.

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