ArticleBiology letters2012
Reassessment of genome size in turtle and crocodile based on chromosome measurement by flow karyotyping: close similarity to chicken.
Article in Biology letters, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 35 citations in OpenAlex.
- Review
- The Cytogenetic Map of the Nile Crocodile (International journal of molecular sciences · 2022Article
- Observations on chromosome-specific sequencing for the construction of cross-species chromosome homology maps and its resolution of human:alpaca homology.Molecular cytogenetics · 2022Review
- Microchromosomes are building blocks of bird, reptile, and mammal chromosomes.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- A brief review of vertebrate sex evolution with a pledge for integrative research: towards 'Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Review
- Why Do Some Vertebrates Have Microchromosomes?Cells · 2021Review
- Review
- Review
- Article
- Article
- Marsupial chromosome DNA content and genome size assessed from flow karyotypes: invariable low autosomal GC content.Royal Society open science · 2018Article
- Homologue-specific chromosome sequencing characterizes translocation junctions and permits allelic assignment.DNA research : an international journal for rapid publication of reports on genes and genomes · 2018Article
- Review
- Article
- Upgrading short-read animal genome assemblies to chromosome level using comparative genomics and a universal probe set.Genome research · 2017Article
- Karyotyping human chromosomes by optical and X-ray ptychography methods.Biophysical journal · 2015Article
- Novel tools for characterising inter and intra chromosomal rearrangements in avian microchromosomes.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2014Article
- The bat genome: GC-biased small chromosomes associated with reduction in genome size.Chromosoma · 2013Article
- Molecular cytogenetic map of the central bearded dragon, Pogona vitticeps (Squamata: Agamidae).Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2013Article
- Intra-genomic GC heterogeneity in sauropsids: evolutionary insights from cDNA mapping and GC(3) profiling in snake.BMC genomics · 2012Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The genome size in turtles and crocodiles is thought to be much larger than the 1.2 Gb of the chicken (Gallus gallus domesticus, GGA), according to the animal genome size database. However, GGA macrochromosomes show extensive homology in the karyotypes of the red eared slider (Trachemys scripta elegans, TSC) and the Nile crocodile (Crocodylus niloticus, CNI), and bird and reptile genomes have been highly conserved during evolution. In this study, size and GC content of all chromosomes are measured from the flow karyotypes of GGA, TSC and CNI. Genome sizes estimated from the total chromosome size demonstrate that TSC and CNI are 1.21 Gb and 1.29 Gb, respectively. This refines previous overestimations and reveals similar genome sizes in chicken, turtle and crocodile. Analysis of chromosome GC content in each of these three species shows a higher GC content in smaller chromosomes than in larger chromosomes. This contrasts with mammals and squamates in which GC content does not correlate with chromosome size. These data suggest that a common ancestor of birds, turtles and crocodiles had a small genome size and a chromosomal size-dependent GC bias, distinct from the squamate lineage.
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