标题七叶一枝花三个不同居群的染色体组型的初步观察。
An observation on karyotypes of three different populations of Paris polyphylla .
目前，研究人员正在分析这种疾病的染色体结构，并已识别出它的染色体组型。
The team is working on the disease's chromosome structure and has just identified the karyotype. (Karyotypes are pictures of cellular chromosomes that are used to check for abnormalities.)
这些都是染色体组型分析方法的改进。
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