Causes of HIV diversity
Article Abstract:
The causes and mechanisms of HIV genetic diversity need to be researched to develop an appropriate treatment. Mutation and selection forces with cell tropism, immune response and random activation of infected cells may be the main causes of the reverse transcriptase high error rate. The pattern of HIV evolution in a hemophiliac patient beginning with seroconversion and continued over seven years was analyzed for amino-acid changing and amino-acid preserving nucleotide substitution patterns. This research appears to support cell tropism through a decrease in positive selection but further research is necessary.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Evolution of indirect reciprocity by image scoring
Article Abstract:
A new theoretical framework based on indirect reciprocity is presented. Computer simulations and analytic models specifying the conditions needed for evolutionary stability of indirect reciprocity, are presented. It is shown that the probability of knowing the image of the recipient should exceed the cost-to-benefit ratio of the altruistic act. It is proposed that indirect reciprocity emerged as a decisive step in the evolution of human societies.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
The evolution of syntactic communication
Article Abstract:
The evolution of syntactic communication is examined using a model for the population dynamics of language evolution.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Nest and egg clutches of the dinosaur Troodon formosus and the evolution of avian reproductive traits. Parental care in an ornithischian dinosaur: A dramatic fossil may shed light on how modern archosaurs became devoted parents
- Abstracts: Abnormal processing of visual motion in dyslexia revealed by functional brain imaging. Growth patterns in the developing brain detected by using continuum mechanical tensor maps
- Abstracts: Predictive accuracy of population viability analysis in conservation biology. Catastrophic extinctions follow deforestation in Singapore
- Abstracts: The quest for imperfection. Quantum computing in molecular magnets. A new spin on magnets
- Abstracts: General observation of n-type field effect behavior in organic semiconductors. Molecular-scale interface engineering for polymer light-emitting diodes