短語詞組短語polytene e chromosome 多線染色體polytene chromosome puff 多線染色體polytene chromosome of drosophila 果蠅唾腺染色體polytene chromosome puffing 多線染色體膨松polytene chromosome mapping 多線染色體作圖salivary gland polytene chromosome 唾腺多線染色體bands of polytene chromosome 多線染色體帶polytene chromosome in drosophila melanogaster 果蠅唾腺染色體 返回 polytene chromosome