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Related Concept Videos

Phylogenetic Trees03:21

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Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
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Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
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Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
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Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
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Fusang: a framework for phylogenetic tree inference via deep learning.

Zhicheng Wang1,2, Jinnan Sun3, Yuan Gao1

  • 1Chinese Institute for Brain Research, Beijing 102206, China.

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A new deep learning (DL) framework, Fusang, offers a faster alternative for phylogenetic tree inference, matching traditional methods. With further optimization, Fusang shows potential to surpass existing tools for evolutionary biology research.

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Area of Science:

  • Evolutionary Biology
  • Bioinformatics
  • Computational Biology

Background:

  • Phylogenetic tree inference is crucial for understanding evolutionary relationships, traditionally relying on Maximum Likelihood (ML) and Bayesian Inference (BI) methods.
  • Bayesian Inference (BI) is computationally intensive and too slow for large datasets, limiting its practical application in evolutionary biology.
  • Deep Learning (DL) has shown promise in phylogenetic inference, but practical, scalable tools for real-world applications are lacking.

Purpose of the Study:

  • To introduce Fusang, a novel deep learning-based framework for phylogenetic tree inference.
  • To evaluate Fusang's performance against established methods like ML using both simulated and real biological datasets.
  • To highlight the potential of Fusang to overcome the computational limitations of traditional phylogenetic inference tools.

Main Methods:

  • Development of Fusang, a deep learning framework specifically designed for phylogenetic tree inference.
  • Comparative analysis of Fusang's performance against Maximum Likelihood (ML) methods.
  • Validation using both simulated datasets and real-world biological sequence data.

Main Results:

  • Fusang demonstrates performance comparable to existing Maximum Likelihood (ML)-based phylogenetic tree inference tools.
  • The framework was tested on both simulated and authentic biological datasets, confirming its applicability.
  • Fusang shows potential for further improvement and outperforming ML tools with ongoing optimization and customized training.

Conclusions:

  • Fusang presents a viable deep learning alternative for phylogenetic tree inference, addressing the speed limitations of traditional methods.
  • The framework achieves competitive accuracy, making it suitable for analyzing large-scale evolutionary datasets.
  • Continuous development and tailored training datasets position Fusang as a promising tool for advancing evolutionary biology research.