Related Experiment Video
Updated: Jun 5, 2026
08:03
Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
Published on: December 7, 2021
Developmental genetics and homology: a hierarchical approach
1Dept of Ecology and Evolution, State University of New York, Stony Brook, NY 11794-5245, USA.
Trends in Ecology & Evolution
|January 18, 2011
Summary
Developmental genetics advances bridge evolution and development studies. Integrating comparative methods with gene and trait analysis clarifies homology and evolutionary origins.
Area of Science:
- Evolutionary developmental biology
- Genetics
- Comparative morphology
Background:
- Advances in developmental genetics offer new ways to link development and evolution.
- Understanding homology is crucial for integrating these fields.
- Developmental genetic data requires a comparative framework for evolutionary insights.
Purpose of the Study:
- To explore how developmental genetics can inform evolutionary studies.
- To emphasize the importance of homology in evolutionary developmental biology.
- To demonstrate the utility of the comparative method in analyzing developmental traits.
Main Methods:
- Utilizing developmental genetic data within a comparative framework.
- Analyzing traits across multiple hierarchical levels: genes, gene expression, embryonic origins, and morphology.
- Applying the comparative method to study evolutionary and developmental origins of traits.
Main Results:
- The comparative analysis of genes, gene expression, embryonic origins, and morphology can reveal developmental integration, opportunity, and constraint.
- This approach provides insights into the evolutionary and developmental origins of traits.
- The integration of developmental genetics and comparative methods aids in resolving controversies surrounding homology.
Conclusions:
- Developmental genetics and evolutionary studies can be effectively integrated using the comparative method.
- A clear understanding of homology is essential for this integration.
- This integrated approach has significant implications for understanding trait evolution and resolving conceptual debates in biology.
Related Concept Videos
02:54Evolutionary Relationships through Genome Comparisons
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...
01:28Microbial Phylogeny
Understanding the evolutionary relationships among microorganisms is fundamental to microbial ecology and taxonomy. Phylogenetic trees are essential tools for inferring these relationships, relying primarily on comparative analyses of molecular sequences such as DNA, RNA, or proteins. In microbial studies, these trees typically depict the evolutionary paths of diverse bacterial and archaeal species by mapping genetic differences accumulated over time.Phylogenetic trees are composed of tips,...
02:05Gene Evolution - Fast or Slow?
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
02:05Gene Evolution - Fast or Slow?
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
02:31Synteny and Evolution
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
03:21Phylogenetic Trees
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.The length of the branches can depict time or the relative amount of change among organisms. For instance, the branch length might indicate the number of amino acid changes in the sequence that underlies the...