noun
ploidy; polyploidy
Genetics term referring to the number of complete sets of chromosomes in a cell. Often used in contexts like 倍数性の変化 (change in ploidy) or 倍数性解析 (ploidy analysis).
倍数性は、生物の進化において重要な役割を果たす。
Ploidy plays an important role in the evolution of organisms.
この植物は倍数性が異なる複数の品種がある。
This plant has several varieties with different ploidy levels.
ゲノム (genome) is the complete set of genetic material; 倍数性 refers to how many genome copies are present.
Compound of 倍数 (multiple) + 性 (property/nature), literally 'multiplicity property'. The term is a modern scientific coinage corresponding to English 'ploidy'.