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农业科学 常染色质 GLA4 reveals extensive sequence collinearity including gene orders and contentsbetween them. There are some fluctuations of collinearity along the chromosome: The collinearity around the heterochromatin region is weak, while the conservation in euchromatin region is very high. 我们的比较基因组分析表明，在粳稻日本晴和籼稻广陆矮四号之间存在高度的、整体水平的共线性，这种共线性沿着染色体有明显的波动：在短臂近端粒附近，序列间的保守性较高；在着丝粒附近的异染色质区域保守性降低；而长臂的大部分常染色质区域保守性最高。
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