These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: The amplified ribosomal DNA of dytiscid beetles.
    Author: Gall JG, Rochaix JD.
    Journal: Proc Natl Acad Sci U S A; 1974 May; 71(5):1819-23. PubMed ID: 4525295.
    Abstract:
    During oogenesis in many animals there is a massive extrachromosomal synthesis of the genes for ribosomal RNA. In Dytiscid beetles, as in the toad Xenopus, the amplified ribosomal DNA occurs as circular molecules of different sizes. The circles fall into size classes that are integral multiples of a unit circle. It is probable that the unit circle contains the coding sequence for one precursor ribosomal RNA molecule plus accompanying spacer sequences.
    [Abstract] [Full Text] [Related] [New Search]