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Cândido Godói : ウィキペディア英語版 | Cândido Godói
Cândido Godói is a municipality of 6,641 inhabitants in the state Rio Grande do Sul, Brazil near the Argentine border, famous for the high number of twins born there. The twin phenomenon is centered in Linha São Pedro, a small settlement in the city of Cândido Godói, in an ethnically homogeneous population of German descent. == Twinning rate == The rate of twin births in Cândido Godói is 10%, significantly higher than the overall 1.8% rate for the state of Rio Grande do Sul.〔 This rate is unusual, exceeding the highest observed national twinning rate (4.5-5% for southwestern Nigeria〔(【引用サイトリンク】title=The Land of Twins: Seeing Double In Igbo-Ora )〕). Nearly half (8 of 17) of twins examined in one study were monozygotic (identical) twins, a few more than the average of 30%.〔 Twin births were noted from the early twentieth century, when the first colonists included seventeen sets of twins, and have been observed through several generations in the latter part of the twentieth century.〔(【引用サイトリンク】title=Nazi Mystery:Twins from Brazil )〕 The population is largely of Polish or German ancestry, with many tracing ancestry to the Hunsrück region of Germany, which has a higher than average twinning rate.〔 The rate in Cândido Godói could reflect genetic founder effect: rare genetic traits occurring by chance among a small group founding a community will be more common among their descendants than in the population at large.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Cândido Godói」の詳細全文を読む
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