1. A condition in which an organism has more than the normal number of chromosomes, typically resulting from the addition of one or more complete sets or individual chromosomes.
Usage: technical; genetics; biology

Examples

• Hyperploidy in wheat has contributed to the development of modern crop varieties.
• The geneticist studied hyperploidy as a mechanism of evolution in plants.
• Certain cancers exhibit hyperploidy, with cells containing abnormal chromosome numbers.
• Hyperploidy can occur through nondisjunction during meiosis or mitosis.
• Some organisms tolerate hyperploidy better than others depending on their genetic structure.