Fission in the Evolution of a Lizard Karyotype

Fission in the Evolution of a Lizard Karyotype

The lizard Anolis monticola has a diploid chromosome number of 48 (24 macrochromosomes and 24 microchromosomes). More primitive members of the genus, as determined by bone morphology, have 12 macrochromosomes and 24 microchromosomes. Since the higher chromosome number is the derived condition, this...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1972-08, Vol.177 (4049), p.611-613
Hauptverfasser: Webster, T. Preston, Hall, William P., Williams, Ernest E.
Format: Artikel
Sprache:eng
Schlagworte:
Animals
Biological Evolution
Children
Chromosomes
Cystic fibrosis
Diploidy
Evolution
Heterozygotes
Karyotype
Karyotyping
Lizards
Male
Metaphase
Polyribosomes
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Beschreibung
Zusammenfassung:The lizard Anolis monticola has a diploid chromosome number of 48 (24 macrochromosomes and 24 microchromosomes). More primitive members of the genus, as determined by bone morphology, have 12 macrochromosomes and 24 microchromosomes. Since the higher chromosome number is the derived condition, this is a case of karyotypic change by centric fission.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.177.4049.611