Produção Nacional
Revisado por pares
Occurrence of B chromosomes in lizards: a review
2004; Karger Publishers; Volume: 106; Issue: 2-4 Linguagem: Inglês
10.1159/000079294
ISSN1424-8581
AutoresCorine Bertolotto, Kátia C. M. Pellegrino, Yatiyo Yonenaga-Yassuda,
Tópico(s)Genetic diversity and population structure
ResumoAlthough B chromosomes have been reported in many species of plants and animals, few studies have revealed the presence of these extra chromosomes in lizards. B chromosomes of lizards show different morphologies and sizes, from microchromosomes to macrochromosomes, or elements of intermediate size between smaller and larger A chromosomes, and number variability at intra- and inter-individual levels. In most cases, they are late-replicating and show either heterochromatic or no distinctive patterns after C-banding. The great majority of the publications about supernumerary chromosomes in this group have been based on conventional staining analyses, and there is no study designed to address questions related to their composition and structure or origin and evolution.
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