Role of C-heterochromatin in variation of nuclear DNA amount in the genus Chorthippus (Orthoptera, Acrididae)
Belda, J.E.; Cabrero, J.; Camacho, J.P.; Rufas, J.S.
Cytobios 67(268): 13-21
1991
ISSN/ISBN: 0011-4529 PMID: 1935255 Document Number: 383323
The amounts of nuclear DNA were determined for populations of 9 species of the genus Chorthippus from southern Spain. There were significant differences between species and between populations within species. Measurements of chromosomes in C-banded mitotic metaphase cells enabled the relative amounts of positively and negatively C-banded chromatin to be ascertained. This demonstrated that variations observed in the amount of nuclear DNA were due to changes in both types of chromatin, with those in C-heterochromatin being the most important.