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Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes

Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes

The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...

Genomic DNA in Eukaryotes

Genomic DNA in Eukaryotes

Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.

Evolutionary Relationships through Genome Comparisons

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...

Size and Structure of Viral Genomes

Size and Structure of Viral Genomes

Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...

Evolution of Microbial Genome

Evolution of Microbial Genome

Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.

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Updated: May 31, 2026

High-throughput Physical Mapping of Chromosomes using Automated in situ Hybridization

High-throughput Physical Mapping of Chromosomes using Automated in situ Hybridization

Published on: June 28, 2012

Genome cartography: charting the apicomplexan genome.

Jessica C Kissinger¹, Jeremy DeBarry

¹Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, USA. jkissing@uga.edu

Trends in Parasitology

|July 19, 2011

Summary

This review explores the evolution and organization of apicomplexan genomes. Understanding genomic context reveals insights into eukaryotic genome evolution and parasite biology.

Area of Science:

Genomics
Evolutionary Biology
Parasitology

Background:

Historically, genetic maps focused on gene location.
Advances in genome sequencing enable whole-genome analysis and comparison.
Focus is shifting from gene content to genome composition and organization.

Purpose of the Study:

To review the evolution of the apicomplexan genome.
To examine the significance of genomic location in eukaryotes.
To understand the impact of genomic context on parasite biology.

Main Methods:

Review of existing literature on apicomplexan genomics.
Comparative genomics analysis.
Examination of genomic organization and its evolutionary implications.

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High-throughput Physical Mapping of Chromosomes using Automated in situ Hybridization

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Published on: June 28, 2012

2D and 3D Chromosome Painting in Malaria Mosquitoes

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Whole Genome Sequencing for Rapid Characterization of Rabies Virus Using Nanopore Technology

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Main Results:

Insights into the evolutionary trajectory of apicomplexan genomes.
Understanding the role of genomic location in gene function and regulation.
Identification of conserved and unique genomic features in apicomplexans.

Conclusions:

Genomic context is crucial for understanding genome evolution.
Apicomplexan genome organization provides insights into eukaryotic genome diversity.
Genomic location significantly impacts parasite biology and evolution.