Observations and perspectives on the diversification of genomes
Rich information on the prebiotic evolution is still stored in contemporary genomic data. The statistical mechanism at the sequence level may play a significant role in the prebiotic evolution. Based on statistical analysis of genome sequences, it has been observed that there is a close relationship between the evolution of the genetic code and the organisation of genomes. A biodiversity space for species is constructed based on comparing the distributions of codons in genomes for different species according to recruitment order of codons in the prebiotic evolution, by which a closely relationship between the evolution of the genetic code and the tree of life has been confirmed. On one hand, the three domain tree of life can be reconstructed according to the distance matrix of species in this biodiversity space, which supports the three-domain tree rather than the eocyte tree. On the other hand, an evolutionary tree of codons can be obtained by comparing the distributions of the 64 codons in genomes, which agrees with the recruitment order of codons on the roadmap. This is a simple phylogenomic method to study the origins of metazoan, the evolution of primates, etc. This study should be regarded as an exploratory attempt to explain the diversification of the three domains of life by statistical mechanism in prebiotic sequence evolution. It is indicated that the number of bases in the triplet codons might be explained statistically by the number of strands in the triplex DNAs. The adaptation of life to the changing environment might be due to assembly of redundant genomes at the sequence level.
Code (0)
등록된 구현이 없습니다.
Tasks
TripletSimilar Papers 제목 키워드 기반
Observations and perspectives on the prebiotic sequence evolution
The post-genomic era has brought opportunities to bridge traditionally separate fields of early history of life and brought new insight into origin and evolution of biodiversity. According to distributions of codons in g…
Intermittent migration can induce pulses of speciation in a two-island system
Geographic barriers prevent migration between populations, thereby facilitating speciation through allopatry. However, these barriers can exhibit dynamic behavior in nature, promoting cycles of expansion and contraction …
DiversityPan-genome Analysis of the Genus Serratia
Pan-genome analysis is a standard procedure to decipher genome heterogeneity and diversification of bacterial species. Specie evolution is traced by defining and comparing the core (conserved), accessory (dispensable) an…
A review of computational tools for generating metagenome-assembled genomes from metagenomic sequencing data
Microbes are essentially yet convolutedly linked with human lives on the earth. They critically interfere in different physiological processes and thus influence overall health status. Studying microbial species is used …
Cultural Vocal Bursts Intensity PredictionGenome hybridization: A universal way for the origin and diversification of organelles as well as the origin and speciation of eukaryotes
The origin of organelles (mitochondrion, chloroplast and nucleus) remains enigmatic. The endosymbiotic hypothesis that chloroplasts, mitochondria and nuclei descend from the endosymbiotic cyanobacterium, bacterium and ar…