Biological evolution: The origin of the cell, how evolutionary processes work, and current legal attacks and defenses

1991 ◽  
Vol 17 (1-4) ◽  
pp. 183-189
Author(s):  
James Norman Spuhler
2018 ◽  
Vol 44 ◽  
pp. 00063
Author(s):  
Yekaterina Myasnikova ◽  
Aleksandr Spirov

The diversity of branches of knowledge, within which evolutionary approaches are applied to significantly different objects and processes, includes those branches which are especially interesting due to the implementation of the Darwin’s concepts of variation, heredity and selection. This is what is interpreted by some authors as universal selectionism. In this case, objects of evolution may be represented as sequences of symbols, code lines or graphs. This is a method to record heredity of an individual. The recording format allows for mutation (substitution, addition or deletion of certain elements of an individual) and crossing-over during production of offspring from a pair of parent individuals. The approach also allows for a quantitative assessment of the “value” of an individual for evolutionary selection. Such evolution includes, first of all, evolutionary computation, computer-aided modelling of evolution, directed evolution of biomolecules, biological evolution, evolution of technology etc. If we consider the above mentioned examples successively, from computer-based examples to humanitarian one, we can observe definite trends. Firstly, we can see a trend of using “languages” of higher levels to implement an evolutionary problem. Secondly, we can observe a trend of forming “building blocks” in heredity structures as well as a crossing-over mechanism which retains the said blocks. Thirdly, “variation” of an individual is carried out by increasingly high-intelligent methods. Studying of main trends and mutually enriching interchange of experience between such different branches of knowledge may enable to make more reasonable and exact predictions of the results of evolutionary processes and to achieve higher effectiveness of evolutionary search in application areas.


2007 ◽  
Vol 30 (1) ◽  
pp. 123-134
Author(s):  
Ibsen De Gusmão Câmara

The extinctions and their relationships with the biological evolution allow the changes in the biota patterns through the geological time. In this study is presented a synthesis of the extinction events registered in the paleontological data and their importance to the evolutionary processes.


1997 ◽  
Vol 161 ◽  
pp. 419-429 ◽  
Author(s):  
Antonio Lazcano

AbstractDifferent current ideas on the origin of life are critically examined. Comparison of the now fashionable FeS/H2S pyrite-based autotrophic theory of the origin of life with the heterotrophic viewpoint suggest that the later is still the most fertile explanation for the emergence of life. However, the theory of chemical evolution and heterotrophic origins of life requires major updating, which should include the abandonment of the idea that the appearance of life was a slow process involving billions of years. Stability of organic compounds and the genetics of bacteria suggest that the origin and early diversification of life took place in a time period of the order of 10 million years. Current evidence suggest that the abiotic synthesis of organic compounds may be a widespread phenomenon in the Galaxy and may have a deterministic nature. However, the history of the biosphere does not exhibits any obvious trend towards greater complexity or «higher» forms of life. Therefore, the role of contingency in biological evolution should not be understimated in the discussions of the possibilities of life in the Universe.


1984 ◽  
Vol 143 (7) ◽  
pp. 429 ◽  
Author(s):  
M.V. Vol'kenshtein
Keyword(s):  

1983 ◽  
Vol 141 (11) ◽  
pp. 546 ◽  
Author(s):  
M.V. Vol'kenshtein
Keyword(s):  

2020 ◽  
Vol 46 (2) ◽  
pp. 102-118
Author(s):  
Damien D. Nouvel

While Dubai's urban scene is dominated by planned and pre-designed developments, grassroots initiatives have always been present and have helped shape the trajectory of the city's evolution. In one case, an industrial area, Al Quoz, has seen the clustering of art businesses over a relatively short period turning it into a cultural destination. Accounting for most of such clustering, Alserkal Avenue became Dubai's art hot-spot that changed the cultural map of the city. This article describes the rise of Alserkal Avenue, not only as the result of the entrepreneurial action of the proprietors but also as a product of a complex melange of economic, cultural, and urban evolutionary processes that intertwine with the rise of the city itself.


Sign in / Sign up

Export Citation Format

Share Document