polytene
/ˈpɒlɪtiːn/adjective
- Genetics relating to or denoting a giant chromosome which is composed of many parallel copies of the genetic material, as found in Drosophila fruit flies where they are much used in genetic research【遗传】（染色体）多线性的。
词源
1930s: from POLY- 'many' + -tene （from Greek tainia 'band, ribbon'） denoting stages of the first meiotic division.