Background 45S rDNA sites are the most widely documented chromosomal regions in
eukaryotes. The analysis of the distribution of these sites along the chromosome in several …

In this report, we present the genome size, the base composition and the karyotype of
Jatropha curcas L., which is becoming an important oleaginous crop in tropical areas for …

Approximately 15% of eukaryotes contain supernumerary B chromosomes. When present, B
chromosomes frequently represent as much as 5% of the genome. Despite thousands of …

Karyotypic change constitutes an important evolutionary mechanism contributing to in
angiosperm diversification and speciation. Comparative analyses of the karyotype usually …

The Amazon has environmental characteristics that make it unique, and the species that
inhabit it have physiological features that demonstrate their adaptation to an Amazonian …

A cytogenetic map of common bean was built by in situ hybridization of 35 bacterial artificial
chromosomes (BACs) selected with markers mapping to eight linkage groups, plus two …

Although cytogenetics studies in cuckoos (Aves, Cuculiformes) have demonstrated an
interesting karyotype variation, such as variations in the chromosome morphology and …

The genus Dipcadi Medik.(Subfamily: Scilloideae) has a narrow distribution in India and
several overlapping morphological traits make the genus taxonomically challenging at the …

Allioideae (eg, chives, garlics, onions) comprises three mainly temperate tribes: Allieae (800
species from the northern hemisphere), Gilliesieae (80 South American species), and …

The independent evolution of heteromorphic sex chromosomes in 19 species from 4 families
of flowering plants permits studying X/Y divergence after the initial recombination …