遗传染色体变异（XXY、XYY）3类考法全通关，学渣渣不要点进来，我怕你一学就会【元哥生物】
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| MP4 | N/A | 480P | Download |
| MP4 | N/A | 480P | Download |
| MP4 | N/A | 360P | Download |
| MP4 | N/A | 360P | Download |
| AUDIO | |||
| MP4 | N/A | mp4a.40.2 | Download |
| MP4 | N/A | mp4a.40.5 | Download |
| MP4 | N/A | mp4a.40.2 | Download |
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JPEG | Origin Image | Download |
染色体变异XXY、XYY、XXX、XO最近几年考试经常出，我不允许宝子还不会做，一个视频，包含3类考法，2个大招，你必须得来看一下。
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