Abstract
The number of nucleoli increases shortly after the conversion of germ cells into oogonia or spermatogonia in Xenopus laevis. This event demands a modification of the theory of gene amplification. A new explanation is proposed which involves non-chromosomal genes restricted to the germ-line.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
We are sorry, but there is no personal subscription option available for your country.
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Perkowska, E., MacGregor, H. C., and Birnstiel, M. L., Nature, 217, 649 (1968).
Gall, J. G., Proc. US Nat. Acad. Sci., 60, 553 (1968).
Brown, D. D., and Dawid, I. B., Science, 160, 272 (1968).
Evans, D., and Birnstiel, M., Biochim. Biophys. Acta, 166, 274 (1968).
Wallace, H., and Birnstiel, M. L., Biochim. Biophys. Acta, 114, 296 (1966).
Gall, J. G., and Pardue, M. L., Proc. US Nat. Acad. Sci., 63, 378 (1969).
John, H. A., Birnstiel, M. L., and Jones, K. W., Nature, 223, 582 (1969).
Miller, O. L., and Beatty, B. R., Science, 164, 995 (1969).
Pardue, M. L., J. Cell. Biol., 43(2). 101a (1969).
Wallace, H., J. Morphol., 112, 261 (1963).
Wallace, H., Nature, 199, 1115 (1963).
Blackler, A. W., Adv. Reprod. Physiol., 1, 9 (1966).
Wallace, H., Science, 161, 396 (1968).
Nieuwkoop, P. D., and Faber, J., Normal Table of Xenopus laevis (Daudin) (North-Holland, Amsterdam, 1956).
Nieuwkoop, P. D., and Suminski, E. H., Arch. d'Anat. Microsc. Morphol. Exp., 48, 189 (1959).
Wallace, H., Quart. J. Microsc. Sci., 103, 25 (1962).
Wallace, H., J. Embryol. Exp. Morphol., 10, 212 (1962).
Weismann, A., as quoted by Wilson, E. B., The Cell in Development and Heredity (Macmillan, London, 1896).
MacGregor, H. C., Quart. J. Microsc. Sci., 106, 215 (1965).
Smith, L. D., Develop. Biol., 14, 330 (1966).
Blackler, A. W., J. Embryol. Exp. Morphol., 13, 51 (1965).
Ullmann, S. L., J. Embryol. Exp. Morphol., 13, 73 (1965).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
WALLACE, H., MORRAY, J. & LANGRIDGE, W. Alternative Model for Gene Amplification. Nature New Biology 230, 201–203 (1971). https://doi.org/10.1038/newbio230201a0
Received:
Issue Date:
DOI: https://doi.org/10.1038/newbio230201a0
This article is cited by
-
Germ line — soma differentiation inAscaris: A molecular approach
Experientia (1985)
-
Quantitative determination of amplified rDNA and its distribution during oogenesis in Xenopus laevis
Chromosoma (1979)
-
Chromosome banding in amphibia
Chromosoma (1978)
-
DNA accumulation during oogenesis in the free-living nematode Panagrellus silusiae
Chromosoma (1975)
-
Ultrastructural observations on the germ line of Xenopus laevis
Zeitschrift f�r Zellforschung und mikroskopische Anatomie (1973)
