Polyploidy

Definition

An increase in the number of copies of the haploid genome.

Etymology

From Greek 'poly-', meaning 'many', and 'ploos', meaning 'fold' or 'multiple'.

Example

Many insect species have tissues that are polyploid, such as the salivary glands.

Related Terms

• Chromosome number
• Endopolyploidy

Usage Notes

Polyploidy can lead to larger cell size and increased genetic diversity. In some cases, polyploid organisms may exhibit altered developmental patterns or reproductive strategies.