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Related Concept Videos

Genomics02:02

Genomics

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Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
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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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Next-generation Sequencing03:00

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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.
Next-Generation Sequencing Methods
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Gene Duplication and Divergence02:37

Gene Duplication and Divergence

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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.
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Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

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Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
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Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
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Updated: Nov 28, 2025

G2-seq: A High Throughput Sequencing-based Technique for Identifying Late Replicating Regions of the Genome
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Closing the Gaps in Genomic Research.

Cesar Fortes-Lima1, Carina Schlebusch2

  • 1Human Evolution, Department of Organismal Biology, Evolutionary Biology Centre, Uppsala, Sweden.

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|November 28, 2020
PubMed
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Genomic diversity in Africa remains largely unknown, hindering our understanding of human origins and health. Further characterization of African genomes is crucial for scientific advancement and global well-being.

Keywords:
Africaadmixturehuman healthpopulation genomicsselectionwhole-genome

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Area of Science:

  • Genomics
  • Human Evolution
  • Population Genetics

Background:

  • Africa is the cradle of humankind, yet its genomic diversity is underrepresented in research.
  • Sparse genomic data from Africa limits comprehensive understanding of human demographic history.
  • Accurate representation of global genetic variation is essential for biomedical advancements.

Purpose of the Study:

  • To highlight the critical need for comprehensive genomic characterization in Africa.
  • To emphasize the implications of understudied African genomic diversity for human evolutionary studies.
  • To underscore the importance of this research for improving global health outcomes.

Main Methods:

  • Review of current literature on African genomic diversity.
  • Analysis of existing genomic datasets from African populations.
  • Identification of research gaps and future directions.

Main Results:

  • Significant gaps exist in the genomic data available for African populations.
  • Current data does not fully capture the vast genetic diversity within the continent.
  • Underrepresentation skews our understanding of human origins and disease susceptibility.

Conclusions:

  • A concerted effort is required to broaden the characterization of African genomic diversity.
  • Enhanced genomic studies in Africa are vital for accurate reconstruction of human history.
  • Addressing this data gap will significantly contribute to personalized medicine and global health equity.