What is polyploidy?

Explanation

### Step-by-Step Solution:

1. **Definition of Polyploidy**:
Polyploidy is a genetic condition where a cell has more than two complete sets of chromosomes. In a normal diploid organism, the chromosome number is represented as 2n, where "n" is the number of chromosomes in a haploid set. In polyploidy, the cell can have three or more sets of chromosomes.

2. **Understanding Chromosome Sets**:
- A diploid cell has two sets of chromosomes (2n).
- Polyploidy occurs when a cell has three sets (triploid, 3n), four sets (tetraploid, 4n), or even more (pentaploid, 5n, etc.).
...