Identify the odd one:-

Options

A. Monoploidy
B. Diploidy
C. Polyploidy
D. Hyperploidy

Answer

To identify the odd one out from the given options, we need to analyze each term in relation to how they describe chromosome sets.

1. **Monoploidy**: This term refers to a condition where a cell has a single set of chromosomes (n). This is typically seen in gametes (sperm and egg cells).

2. **Diploidy**: This term indicates that a cell has two sets of chromosomes (2n). Most somatic (body) cells in humans and many other organisms are diploid.

3. **Polyploidy**: This condition refers to cells that have more than two sets of chromosomes (3n, 4n, etc.). Polyploidy is common in plants and can lead to increased size and vigor.

4. **Hyperploidy**: This term describes a condition where a cell has one or more extra chromosomes, but it does not specifically refer to sets of chromosomes. Instead, it emphasizes the presence of additional chromosomes beyond the normal count.

Now, let's summarize the key points:

- Monoploidy, diploidy, and polyploidy all refer to the number of sets of chromosomes in a cell.
- Hyperploidy, however, refers to the presence of extra chromosomes without specifying the number of sets.

**Conclusion**: The odd one out is **Hyperploidy** because it does not relate to the concept of sets of chromosomes like the other three options do.