Explanation

Polyploidy cells and organisms are those containing more than two paired (homologous) sets of chromosomes. Most eukaryotic species are diploid meaning they have two sets of chromosomes, one set inherited from each parent. However, polyploidy is found in some organisms and is especially common in plants. Polyploidy occurs in some animals, such as goldfish, salmon, and salamanders, but is especially common among ferns and flowering plants including both wild and cultivated species. Wheat, for example, after millennia of hyrbidisation and modification by humans, has strains that are diploid (two sets of chromosomes), tetraploid (four sets of chromosomes) with the common name of durum or macaroni wheat, and hexaploid (six sets of chromosomes) with the common name of bread wheat