chromosome end染色体端chromosomen.染色体chromosome abnormality trisomy三体性染色体异常chromosome condensation factor染色体凝聚因子chromosome aberration analysis染色体畸变分析法chromosome length polymorphism染色体长度多态性chromosome in situ suppressionCISSchromosome aberration syndrome染色体病Chromosome introgression lines染色体导入系chromosome instability syndrome染色体不稳定综合征chromosome imbalance hypothesis染色体不平衡假说Chromosome specific DNA library特异性文库