ISSN:
1432-0886
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary Nuclear DNA values were determined by the cytochemical photometric method for various tissues of diploid and haploid Rana pipiens embryos. It was found that the ratio of diploid to haploid amounts of nuclear DNA was approximately two to one. The major interest of this study lies in the demonstration of a wide range of nuclear DNA values and the correlation of changes in this range with progressive differentiation. Older, more differentiated tissues were found to have a narrower range of DNA values than younger, less differentiated tissues. Evidence is cited that such differences in DNA values are real biological variations and the results are discussed in relation to differentiation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00325791
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