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5S rRNA-encoding genes of the marsupial frog Gastrotheca riobambae
E M del Pino1, C Murphy, P H Masson
1Department of Embryology, Carnegie Institution, Baltimore, MD 21210.
Gene
|February 15, 1992
Abstract:
The major 5S rRNA gene repeat of the marsupial frog, Gastrotheca riobambae, is 1052 bp in length. It contains a 5S rRNA gene similar to the Xenopus laevis somatic gene, two spacer regions, and a pseudogene. The G. riobambae haploid genome contains about 500 copies of this predominant repeat. This relatively low number of 5S rRNA genes is associated with a limited amplification of the 18S, 5.8S and 28S rRNA genes in oocytes and with a slow rate of early development.