Related Experiment Video
Updated: Dec 31, 2025

2D and 3D Chromosome Painting in Malaria Mosquitoes
Published on: January 6, 2014
Cytogenetic analysis shows extensive genomic rearrangements between red howler (Alouatta seniculus, Linnaeus)
R Stanyon1, S Tofanelli2, M A Morescalchi1
1Institute of Physical Anthropology, University of Genoa, Genoa, Italy.
Abstract:
A comparison of the G-banded karyotypes of two red howler subspecies, Alouatta seniculus arctoidea and A. s. sara, showed that they differed by at least 14 chromosomal rearrangements. Genomic reshuffling is so great that homologs between subspecies could not be found for some chromosome, while the assignment of homology for other chromosomes remains uncertain. The two red howlers, however, share an unusual X1X2Y1Y2/ X1X1X2X2 sex-chromosome system that resulted from a Y-autosome translocation, probably in a common ancestor. The great chromosomal variability resulting from rapid chromosomal evolution in howlers indicates that cytogenetic data could make an important contribution to resolving phylogenetic and conservation problems in this group of highly conspicuous New World Monkeys. © 1995 Wiley-Liss, Inc.
Related Concept Videos
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon...
Evolutionary Relationships through Genome Comparisons
Synteny and Evolution
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Hybrid Zones

