Epigenetics and plant evolution
Paun, Ovidiu Molecular Systematics Group, Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, United Kingdom.
- Methylation of DNA
- Chromatin remodeling
- Small RNA molecules
- Epigenetics and evolution
- Polyploidy and hybridization
- Links to Primary Literature
- Additional Readings
For almost a century, our understanding of evolution has been based on the modern evolutionary synthesis, also known as “neo-Darwinism.” This paradigm assumes that natural selection is acting solely on the amount and structuring of heritable genetic variation, for which the ultimate origin is random mutation. Accordingly, genetic uniformity will severely constrain the adaptive flexibility of a given population or species, sooner or later resulting in evolutionary failure. During the 1990s, a challenge to this foundation was posed: several studies revealed that heritable phenotypic variation did not need to be based on variation in primary (coding) DNA sequences; instead, novel permutations of spatial and temporal patterns of gene expression could be achieved via a suite of noncoding changes, even in the complete absence of genetic variability.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 9000 highly qualified scientists and 43 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information