1. Plural of amphidiploidy; the condition in an organism of having two complete sets of chromosomes from each of two different species, resulting from hybridization followed by chromosome doubling.
Usage: technical; biology; genetics

Examples

• Amphidiploidies are common in plant evolution and have contributed to the formation of many crop species.
• The wheat species exhibits amphidiploidies that arose through ancient hybridization events.
• Researchers study amphidiploidies to understand how new polyploid species originate in nature.
• Amphidiploidies can restore fertility to sterile hybrids by doubling their chromosome number.
• The formation of amphidiploidies is an important mechanism of speciation in plants.