Polytene chromosomes of Oxytricha: Biochemical and morphological changes during macronuclear development in a ciliated protozoan

@article{Spear1976PolyteneCO,
  title={Polytene chromosomes of Oxytricha: Biochemical and morphological changes during macronuclear development in a ciliated protozoan},
  author={Brian B. Spear and Marlene R. Lauth},
  journal={Chromosoma},
  year={1976},
  volume={54},
  pages={1-13}
}
After conjugation in the ciliated protozoan, Oxytricha, polytene chromosomes are formed during the development of a macronucleus from a micronucleus. Here we report a microscopic study of these chromosomes and an analysis of their DNA. The polytene chromosomes of Oxytricha bear a strong morphological resemblance to the polytene chromosomes of the Dipteran salivary gland. The nucleus of a developing macronuclear anlage contains 120±2 polytene chromosomes and each chromosome has an average of 81… CONTINUE READING