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| XO 型性别决定 | |||
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| XO 型染色体 | |||
| XO 型只有一个性染色体,而缺乏另一个X或Y 染色体 | |||
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XO type : 2 phrases in 2 subjects |
| Animal husbandry | 1 |
| Reproductive biology | 1 |
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