Genetic flexibility of plant chloroplasts
Article Abstract:
The chloroplast genome is believed to be monomorphic, although there is potential for accumulating and maintaining mutations. The chloroplast genome of Senecio vulgaris, the common groundsel, is found to be polymorphic for a point mutation conferring resistance to triazine herbicides. It is assumed suggested that the transmission of the polymorphic chloroplast DNA state to the progeny is maintained through many generations. Fitness costs of point mutation conferring triazine resistance may only be significant if polymorphism levels exceed certain carrying capacities.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Towards better benzodiazepines
Article Abstract:
Research into the impact of receptors on behavior can help in the development of drugs such as benzodiazepines. Benzodiazepines are useful in treating anxiety and insomnia, but they can also have an effect on the memory, exacerbate the effect of alcohol and affect concentration. Experiments indicate that the anxiety reducing effects of benzodiazepines are dependent on particular receptors.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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