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Related Concept Videos

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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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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
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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.
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Related Experiment Video

Updated: Mar 29, 2026

Transcriptomic Analysis of C. elegans RNA Sequencing Data Through the Tuxedo Suite on the Galaxy Project
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A taste of pineapple evolution through genome sequencing.

Qing Xu1, Zhong-Jian Liu1

  • 1National Orchid Conservation Center of China and Orchid Conservation and Research Center of Shenzhen, Shenzhen, China.

Nature Genetics
|December 2, 2015
PubMed
Summary

Scientists assembled the genome of the highly heterozygous pineapple (Ananas comosus), a significant technical feat. This genome sequence advances our understanding of pineapple

Area of Science:

  • Genomics
  • Plant Biology
  • Evolutionary Biology

Background:

  • The pineapple (Ananas comosus) is a commercially important fruit crop with complex genetics.
  • Understanding the genetic makeup of Ananas comosus is crucial for crop improvement and evolutionary studies.

Purpose of the Study:

  • To achieve a high-quality genome sequence assembly for the highly heterozygous Ananas comosus.
  • To provide a foundational resource for exploring pineapple genetics, morphology, and evolution.

Main Methods:

  • Utilized advanced sequencing technologies to assemble the complex pineapple genome.
  • Employed bioinformatics tools for sequence assembly and analysis.

Main Results:

  • Successfully generated a comprehensive genome sequence assembly for Ananas comosus.

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  • The assembly represents a significant technical achievement due to the plant's high heterozygosity.

    • Conclusions:

    • The Ananas comosus genome sequence is a valuable resource for future research.
    • This genomic data will facilitate a deeper understanding of pineapple morphology and evolutionary history.