- (molecular biology) Having very large chromosomes with many chromatids (arms).
1957, Carl P. Swanson, Cytology and Cytogenetics, page 300:
- When this was done, it could be shown that the production of polytene chromosomes is not uniform for all chromosomes of a single nucleus, ie, some chromosomes are more polytene than others, […]
polytene (plural polytenes)
- (molecular biology) A very large chromosome with many chromatids (arms); a chromosome exhibiting polyteny