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The quantity and gender diversity of different ploidy CC detected in the past five years
| Year | Total | 2nCC | 3nCC | 4nCC | |||
|---|---|---|---|---|---|---|---|
| Number | Ratio of the population | Number | Ratio of the population | Number | Ratio of the population | ||
| 2005 | 77 | 30 (17 ♀, 13♂) | 39% | 47 (45 ♀, 2♂) | 61% | 0 | 0% |
| 2006 | 271 | 61 (33♀, 28♂) | 23% | 186 (164♀, 22♂) | 68% | 24 (24♀, 0♂) | 9% |
| 2007 | 225 | 46 (22♀, 24♂) | 20% | 166 (134♀, 32♂) | 74% | 13 (13♀, 0♂) | 6% |
| 2008 | 237 | 8 (2♀, 6♂) | 3% | 229 (170♀, 59♂) | 97% | 0 | 0% |
| 2009 | 139 | 7 (1♀, 6♂) | 5% | 130 (104♀, 26♂ | 94% | 2(2♀, 0♂) | 1% |
