Some dioecious plants determine sex by sex chromosomes (XY or ZW) like mammals or birds. A pair of birds on branches of a pine tree, which is a symbol of a new year in Japan, is a couple of Eclectus parrots ( Eclectus roratus ) having extreme sexual dimorphism (left: ZZ male; right: ZW female). What they hold in their beaks are flowers of ‘Suiba’ (common sorrel or Rumex acetosa; left: XY1Y2 male; right: XX female). Suiba is one of the first species among the seed plants whose existence of sex chromosomes was reported (H. Kimura & T. Ono (1923) Bot. Mag. (Tokyo) 37(438), 147–149. DOI: 10.15281/jplantres1887.37.438_147). It is known that Suiba's sex determination system is similar to that of  Drosophila  and depends on the ratio of X chromosomes to autosomes. Designed by TRAIS Co., Ltd. (Kobe, Japan) | Zendy

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Some dioecious plants determine sex by sex chromosomes (XY or ZW) like mammals or birds. A pair of birds on branches of a pine tree, which is a symbol of a new year in Japan, is a couple of Eclectus parrots ( Eclectus roratus ) having extreme sexual dimorphism (left: ZZ male; right: ZW female). What they hold in their beaks are flowers of ‘Suiba’ (common sorrel or Rumex acetosa; left: XY1Y2 male; right: XX female). Suiba is one of the first species among the seed plants whose existence of sex chromosomes was reported (H. Kimura & T. Ono (1923) Bot. Mag. (Tokyo) 37(438), 147–149. DOI: 10.15281/jplantres1887.37.438_147). It is known that Suiba's sex determination system is similar to that of Drosophila and depends on the ratio of X chromosomes to autosomes. Designed by TRAIS Co., Ltd. (Kobe, Japan)

Publication year - 2015

Publication title -

genes to cells

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.912

H-Index - 115

eISSN - 1365-2443

pISSN - 1356-9597

DOI - 10.1111/gtc.12213

Subject(s) - biology , autosome , dioecy , sexual dimorphism , zoology , evolutionary biology , genetics , botany , x chromosome , gene , pollen

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