What is aneuploidy?Give example .

Explanation

### Step-by-Step Solution:

1. **Definition of Aneuploidy**:
- Aneuploidy refers to a condition in which the number of chromosomes in a cell is not an exact multiple of the haploid number. This means that there is either an extra chromosome or a missing chromosome compared to the normal diploid number.

2. **Normal Chromosomal Condition**:
- In humans, the normal diploid number of chromosomes is 46, which consists of 44 autosomes and 2 sex chromosomes (XX for females and XY for males). A normal cell with this complete set is referred to as euploid.

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