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Related Concept Videos

Gene Evolution - Fast or Slow?02:05

Gene 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...
Gene Evolution - Fast or Slow?02:05

Gene 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...
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary 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...
Multi-species Conserved Sequences02:51

Multi-species Conserved Sequences

Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Gene Duplication and Divergence02:37

Gene Duplication and Divergence

The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
Ribosome Profiling02:24

Ribosome Profiling

Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
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Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
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Related Experiment Video

Updated: May 10, 2026

An Integrated Approach for Microprotein Identification and Sequence Analysis
09:37

An Integrated Approach for Microprotein Identification and Sequence Analysis

Published on: July 12, 2022

Capturing protein-coding genes across highly divergent species.

Chenhong Li1, Michael Hofreiter, Nicolas Straube

  • 1Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai, China.

Biotechniques
|June 14, 2013
PubMed
Summary

New DNA hybridization capture methods efficiently sequence divergent homologous genes. This advance expands the utility of next-generation sequencing for comparative genomics and evolutionary studies.

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Last Updated: May 10, 2026

An Integrated Approach for Microprotein Identification and Sequence Analysis
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Published on: July 12, 2022

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Novel Sequence Discovery by Subtractive Genomics
09:40

Novel Sequence Discovery by Subtractive Genomics

Published on: January 25, 2019

Area of Science:

  • Genomics
  • Molecular Biology
  • Evolutionary Biology

Background:

  • DNA hybridization capture coupled with next-generation sequencing (NGS) enables large-scale gene sequencing.
  • Current methods are limited to capturing targets with high sequence similarity to bait molecules.

Purpose of the Study:

  • To develop modifications for DNA hybridization capture to efficiently target highly divergent homologous sequences.
  • To expand the application of NGS-based sequencing for comparative genomics.

Main Methods:

  • Modified DNA hybridization capture techniques were developed.
  • The modified method was tested for its ability to capture divergent homologous target sequences.

Main Results:

  • The modifications successfully enabled efficient capture of highly divergent homologous target sequences using a single set of baits.
  • The enhanced method overcomes previous limitations in sequence similarity.

Conclusions:

  • The developed method significantly broadens the scope of DNA hybridization capture for sequencing diverse genetic targets.
  • This advancement holds substantial implications for comparative biology and evolutionary research by enabling the study of more distantly related organisms.