Polyploidy

Euploidy eu=true 整倍體 Monopolid Haploid 單倍 Diploid 二倍體 Truploid 三倍體 Tetraploid 四倍體 Hexaploid 六倍體 Aneuploidy 非整倍體 Trisomic 三染體 Tetrasomic 四染體 Monosomic 單染體 Nullisomic 缺對體 Double monosomic 雙缺對體 Autopolyploidy 同源多倍體 Autopolyploids are polyploids with multiple chromosome sets derived from a single species. Autopolyploids can arise from a spontaneous, naturally-occurring genome doubling (for example, the potato). Others might form following fusion of 2n gametes unreduced gametes). Bananas and apples can be found as triploid autopolyploids. Autopolyploid plants typically display polysomic inheritance, and are therefore often infertile and propagated clonally Autotertaploid 同源四倍體 (AAAA) Allopolyploidy 異源多倍體 Allopolyploids are polyploids with chromosomes derived from different species. Triticale is an example of an allopolyploid, having six chromosome sets, four from wheat (Triticum turgidum) and two from rye (Secale cereale). Amphidiploid is another word for an allopolyploid. Some of the best examples of allopolyploids come from the Brassicas, and the Triangle of U describes the relationships among the three common diploid Brassicas (B. oleracea, B. rapa, and B. nigra) and three allotetraploids (B. napus, B. juncea, and B. carinata) derived from hybridization among the diploids. Allotetraploid amphidiploid double diploid .異源四倍體、雙二倍體、複二倍體、兩生二倍體 (AABB) Autoallopolyploid 同源異源多倍體 (AAAABB) Endopolyploid 內生多倍體 二倍體的生物，有時體內細胞是多倍體，