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Related Concept Videos

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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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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Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
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Wilcoxon Signed-Ranks Test for Matched Pairs01:09

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The Wilcoxon signed-rank test for matched pairs evaluates the null hypothesis by combining the ranks of differences with their signs. It essentially tests whether the median of the differences in a population of matched pairs is zero. Since the test incorporates more information than the sign test, it generally yields more trustable conclusions. This test also does not require the data to follow a normal distribution, but two conditions must be met for it to be applicable: (1) the data must...
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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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Related Experiment Video

Updated: Jun 30, 2025

Optimization of Synthetic Proteins: Identification of Interpositional Dependencies Indicating Structurally and/or Functionally Linked Residues
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Improved functions for non-linear sequence comparison using SEEKR.

Shuang Li, Quinn Eberhard, Luke Ni

    Biorxiv : the Preprint Server for Biology
    |March 18, 2024
    PubMed
    Summary
    This summary is machine-generated.

    SEquence Evaluation through k-mer Representation (SEEKR) now estimates statistical significance for sequence similarity. New SEEKR functions identify XIST-like fragments in long noncoding RNAs (lncRNAs) and support RNA-Seq data use.

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    Area of Science:

    • Bioinformatics
    • Genomics
    • Molecular Biology

    Background:

    • Sequence comparison is crucial for understanding nucleic acid function and evolution.
    • Quantifying non-linear sequence similarity presents a challenge in bioinformatics.
    • Identifying functional elements within noncoding RNAs requires robust analytical tools.

    Conclusions:

    • The enhanced SEEKR tool provides robust statistical assessment of sequence similarity.
    • SEEKR facilitates the discovery of functional sequence elements, such as XIST-like fragments in lncRNAs.
    • Integrating RNA-Seq data is essential for reliable lncRNA annotation and downstream functional studies.