Name the chromosome that has centromere in the middle.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Chromosome Structure**: A chromosome consists of two identical halves called chromatids, which are joined together at a region known as the centromere.

2. **Identifying the Centromere's Position**: The centromere can be located in different positions on a chromosome, which affects the shape and classification of the chromosome.

3. **Defining Metacentric Chromosomes**: When the centromere is located in the middle of the chromosome, it divides the chromosome into two equal arms. This type of chromosome is referred to as a "metacentric chromosome."

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