Reduced number of ribosomal sites in bats: evidence for a mechanism to contain genome size
Article Abstract:
The number of ribosomal DNA (rDNA) sites in 50 species of bats is examined by in situ hybridization, and was found to be one to four pairs. The number of rDNA sites in 40 species of rodents ranged from two to ten pairs. Bats have an active mechanism to amplify repetitive DNA elements in the genome, and to move such elements among nonhomologous chromosomes. The mechanisms for increasing site-number variation are active in bats, but the counteractive forces that reduce the number of sites are more effective in the bat genome than in other mammals with higher site values such as rodents.
Publication Name: Journal of Mammalogy
Subject: Zoology and wildlife conservation
ISSN: 0022-2372
Year: 1992
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High levels of genetic change in rodents of Chernobyl
Article Abstract:
The environmental effects of the Chernobyl nuclear power plant accident have significant genetic influence on the organisms living in the region. In voles, the base-pair substitution rates for the mitochondrial cytochrome b gene is hundreds folds higher in the area than generally seen in mitochondria of vertebrates. High substitution within the Chernobyl rodent population is still occurring. The characteristics of these effects differ from the genetic effects observed after the atomic bomb explosions in Hiroshima and Nagasaki.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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J. Knox Jones, Jr.: 1929-1992
Article Abstract:
K. John Knox Jr. died of cancer in his home in Lubbock, Texas on Nov 15, 1992. Knox was an active member of The American Society of Mammalogists (ASM). He conducted research studies in mammalogy, including his dissertation, 'Distribution and taxonomy of mammals of Nebraska,' which was published in 1964. Knox's greatest contribution to mammalogy was the training he provided for future mammalogists. The J. Knox Jones, Jr., Memorial Scholarship at Texas Tech University was created in his honor.
Publication Name: Journal of Mammalogy
Subject: Zoology and wildlife conservation
ISSN: 0022-2372
Year: 1996
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