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The reduction of genic activity in the tetraploid amphibian Odontophrynus americanus is not due to loss of ribosomal DNA.

Authors :
Schmidtke, J.
Beçak, W.
Engel, W.
Source :
Experientia; Jan1976, Vol. 32 Issue 1, p27-28, 2p
Publication Year :
1976

Abstract

Genic activity in tetraploid members of the amphibian species Odontophrymus americanus is reduced to that of diploid ones. Loss of ribosomal genes, a mechanism suggested by others as a means of decreasing genetic activity, could be ruled out. The diploids and the tetraploids have almost identical proportions of their genomes complementary to (28s+18s) ribosomal RNA. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00144754
Volume :
32
Issue :
1
Database :
Complementary Index
Journal :
Experientia
Publication Type :
Academic Journal
Accession number :
70742529
Full Text :
https://doi.org/10.1007/BF01932605