ISSN:
1432-2242
Keywords:
DNA
;
Base pair distribution
;
Divergence
;
Oryza
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary DNAs have been isolated from various Oryza species and studied using physical techniques. The percent of guanine plus cytosine has been determined by thermal denaturation. While the base composition varied between the species, no heterogeneity in the base pair distribution was observed. Renaturation kinetics data of DNAs from different species show that the proportion of repeated DNA sequences vary considerably depending on the DNA content per cell, whereas the nonrepetitive DNA component remains relatively constant. These results suggest that in addition to a small range of DNA variation between the species, changes in the base composition and proportion of repeated sequences have accompanied divergence of the species within the genus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00267711
