Syntheseprozesse an den Riesenchromosomen von Glyptotendipes

  title={Syntheseprozesse an den Riesenchromosomen von Glyptotendipes},
  author={Ludwig Walter},
At the heterochromatic sections of salivary gland chromosomes in Glyptotendipes barbipes puffs can be induced by temperature shocks and X-rays. There is no measureable RNA- synthesis at these puffs, but small amounts of the typical puff-proteins are produced. It has been proved cytophotometrically that DNA makes the same number of replication steps in the hetero-chromatic and euchromatic regions. The incorporation of 3H-thymidine shows that the heterochromatic parts of the polytene chromsomes… CONTINUE READING