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IAPT chromosome data 28
(International Association for Plant Taxonomy, 2018-12)
The chromosome numbers of 28 and karyotype features of 17 taxa of Cactaceae are presented.Physical mapping by FISH for four species (Arrojadoa rhodacantha, Melocactus bahiensis, Pachycereus pringlei, Tacinga inamoena)were ...
Tracking the evolution of sex chromosome systems in Melanoplinae grasshoppers through chromosomal mapping of repetitive DNA sequences
(BioMed Central, 2013-08)
Background: The accumulation of repetitive DNA during sex chromosome differentiation is a common feature of many eukaryotes and becomes more evident after recombination has been restricted or abolished. The accumulated ...
Relationship between physical and genetic distances along the zebra finch Z chromosome
(Springer, 2008-12)
Nine bacterial artificial chromosomes containing genes linked to the Z chromosome of the zebra finch (Taeniopygia guttata) were localized using FISH on synaptonemal complex spreads. Their positions were correlated with ...
Comparative mapping of a new repetitive DNA sequence and chromosome region-specific probes unveiling rearrangements in an Amazonian frog complex
(National Research Council Canada-NRC Research Press, 2021-07)
The frog species Physalaemus ephippifer exists in the Amazonian region and harbors heteromorphic Z and W chromosomes. A genetic lineage closely related to this species was recognized based on its mitochondrial DNA and ...
Chromosome evolution and phylogeny in Ronderosia (Orthoptera, Acrididae, Melanoplinae): clues of survivors to the challenge of sympatry?
(Wiley Blackwell Publishing, Inc, 2019-01)
In an attempt to unveil the origin of neo-sex chromosomes in Ronderosia Cigliano grasshoppers, we performed a combined phylogenetic analysis based on morphological (external morphology and male genitalia) and molecular ...
Contribution of Yeast Artificial Chromosome-Based Physical Maps to the Final Assembly of the Trypanosoma cruzi Genome
(Humana Press, 2006)
This chapter describes the methodology used both in performing the electrophoretic karyotype of the protozoan parasite Trypanosoma cruzi and mapping the genetic markers of the chromosomal bands, the construction of ...
Data reassessment in a phylogenetic context gives insight into chromosome evolution in the giant genus Solanum (Solanaceae)
(Cambridge University Press, 2018-05)
Chromosome data are fundamental in evolution. However, there has been no attempt to synthesize and evaluate the significance of such information from a phylogenetic perspective in the giant genus Solanum, which was the aim ...
Dna organization along pachytene chromosome axes and its relationship with crossover frequencies
(MDPI AG, 2021-02-27)
During meiosis, the number of crossovers vary in correlation to the length of prophase chromosome axes at the synaptonemal complex stage. It has been proposed that the regular spacing of the DNA loops, along with the close ...
Incipient speciation in Calceolaria polyrhiza complex (Calceolariaceae): Cytogenetic analysis supports molecular and morphological data
(Taylor & Francis Ltd, 2021-06)
Calceolaria polyrhiza is a perennial herb distributed in southern South America. The species is highly polymorphic and includes four described morphotypes that were previously considered different species. We performed a ...
Understanding the extensive hybridization in South American Nothofagus through karyotype analysis
(Oxford University Press, 2018-07)
Extensive phylogeographic and population studies in Nothofagus revealed that hybridization, introgression and plastid capture are common phenomena that have occurred throughout the evolutionary history of the genus. Here, ...