claim: Yvonne Strahovski worked on an ABC show.
evidence: Polyploid cells and organisms are those containing more than two paired -LRB- homologous -RRB- sets of chromosomes .. cells. biological cell. homologous. Homologous chromosome. Most species whose cells have nuclei -LRB- Eukaryotes -RRB- are diploid , meaning they have two sets of chromosomes -- one set inherited from each parent .. cells. biological cell. nuclei. Cell nucleus. Eukaryotes. Eukaryotes. diploid. diploid. species. species. However , polyploidy is found in some organisms and is especially common in plants .. plants. plants. In addition , polyploidy occurs in some tissues of animals that are otherwise diploid , such as human muscle tissues .. diploid. diploid. muscle. muscle. This is known as endopolyploidy .. Species whose cells do not have nuclei , that is , Prokaryotes , may be polyploid organisms , as seen in the large bacterium Epulopiscium fishelsoni .. cells. biological cell. nuclei. Cell nucleus. Prokaryotes. Prokaryotes. Epulopiscium fishelsoni. Epulopiscium fishelsoni. Hence ploidy is defined with respect to a cell .. ploidy. ploidy. Most eukaryotes have diploid somatic cells , but produce haploid gametes -LRB- eggs and sperm -RRB- by meiosis .. cells. biological cell. diploid. diploid. somatic cells. somatic cells. gametes. gametes. meiosis. meiosis. A monoploid has only one set of chromosomes , and the term is usually only applied to cells or organisms that are normally diploid .. cells. biological cell. diploid. diploid. monoploid. Ploidy. Male bees and other Hymenoptera , for example , are monoploid .. monoploid. Ploidy. Hymenoptera. Hymenoptera. Unlike animals , plants and multicellular algae have life cycles with two alternating multicellular generations .. plants. plants. algae. algae. alternating multicellular generations. alternation of generations. The gametophyte generation is haploid , and produces gametes by mitosis , the sporophyte generation is diploid and produces spores by meiosis .. diploid. diploid. gametes. gametes. meiosis. meiosis. gametophyte. gametophyte. mitosis. mitosis. sporophyte. sporophyte. spores. spores. Polyploidy refers to a numerical change in a whole set of chromosomes .. Organisms in which a particular chromosome , or chromosome segment , is under - or overrepresented are said to be aneuploid -LRB- from the Greek words meaning `` not '' , `` good '' , and `` fold '' -RRB- .. chromosome. chromosome. aneuploid. Aneuploidy. Therefore , the distinction between aneuploidy and polyploidy is that aneuploidy refers to a numerical change in part of the chromosome set , whereas polyploidy refers to a numerical change in the whole set of chromosomes .. chromosome. chromosome. Polyploidy may occur due to abnormal cell division , either during mitosis , or commonly during metaphase I in meiosis .. meiosis. meiosis. mitosis. mitosis. cell division. cell division. metaphase I. meiosis#Metaphase I. In addition , it can be induced in plants and cell cultures by some chemicals  : the best known is colchicine , which can result in chromosome doubling , though its use may have other less obvious consequences as well .. chromosome. chromosome. plants. plants. colchicine. colchicine. Oryzalin will also double the existing chromosome content .. chromosome. chromosome. Oryzalin. Oryzalin. Polyploidy occurs in highly differentiated human tissues in the liver , heart muscle and bone marrow .. muscle. muscle. It occurs in the somatic cells of some animals , such as goldfish , salmon , and salamanders , but is especially common among ferns and flowering plants -LRB- see Hibiscus rosa-sinensis -RRB- , including both wild and cultivated species .. cells. biological cell. somatic cells. somatic cells. plants. plants. goldfish. goldfish. salmon. salmon. Hibiscus rosa-sinensis. Hibiscus rosa-sinensis. species. species. Wheat , for example , after millennia of hybridization and modification by humans , has strains that are diploid -LRB- two sets of chromosomes -RRB- , tetraploid -LRB- four sets of chromosomes -RRB- with the common name of durum or macaroni wheat , and hexaploid -LRB- six sets of chromosomes -RRB- with the common name of bread wheat .. diploid. diploid. Wheat. Wheat. hybridization. Hybrid ( biology ). durum. durum. Many agriculturally important plants of the genus Brassica are also tetraploids .. plants. plants. Brassica. Brassica. Polyploidization is a mechanism of sympatric speciation because polyploids are usually unable to interbreed with their diploid ancestors .. diploid. diploid. sympatric speciation. sympatric speciation. An example is the plant Erythranthe peregrina .. plant. plant. Erythranthe peregrina. Erythranthe peregrina. Sequencing confirmed that this species originated from E. x robertsii , a sterile triploid hybrid between E. guttata and E. lutea , both of which have been introduced and naturalised in the United Kingdom .. species. species. New populations of E. peregrina arose on the Scottish mainland and the Orkney Islands via genome duplication from local populations of E. x robertsii .. Because of a rare genetic mutation , E. peregrina is not sterile .