Revisiting the Karyotypes of Alligators and Caimans (Crocodylia, Alligatoridae) after a Half-Century Delay: Bridging the Gap in the Chromosomal Evolution of Reptiles.
Alligatoridae
chromosome
cytogenomics
molecular cytogenetics
Journal
Cells
ISSN: 2073-4409
Titre abrégé: Cells
Pays: Switzerland
ID NLM: 101600052
Informations de publication
Date de publication:
05 06 2021
05 06 2021
Historique:
received:
11
05
2021
revised:
01
06
2021
accepted:
02
06
2021
entrez:
2
7
2021
pubmed:
3
7
2021
medline:
3
11
2021
Statut:
epublish
Résumé
Although crocodilians have attracted enormous attention in other research fields, from the cytogenetic point of view, this group remains understudied. Here, we analyzed the karyotypes of eight species formally described from the Alligatoridae family using differential staining, fluorescence in situ hybridization with rDNA and repetitive motifs as a probe, whole chromosome painting (WCP), and comparative genome hybridization. All Caimaninae species have a diploid chromosome number (2n) 42 and karyotypes dominated by acrocentric chromosomes, in contrast to both species of Alligatorinae, which have 2n = 32 and karyotypes that are predominantly metacentric, suggesting fusion/fission rearrangements. Our WCP results supported this scenario by revealing the homeology of the largest metacentric pair present in both
Identifiants
pubmed: 34198806
pii: cells10061397
doi: 10.3390/cells10061397
pmc: PMC8228166
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Fundação de Amparo à Pesquisa do Estado de São Paulo
ID : 2018/22033-1
Organisme : Conselho Nacional de Desenvolvimento Científico e Tecnológico
ID : 302449/2018-3
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