14 research outputs found
Chromosomal evolution in the vlei rat, <I>O. irroratus</I>, (Muridae: Otomyinae): a compound chromosomal rearrangement seperates two major cytogenetic groups.
No full textNatuurwetenskappeSoologiePlease help us populate SUNScholar with the post print version of this article. It can be e-mailed to: [email protected]
A rapid staining method to differentiate the cytostructure of spermatozoa of farm animals
No full textMolecular cytogenetic insights to the phylogenetic affinities of the giraffe (<I>Giraffa camelopardalis</I>) and pronghorn (<I>Antilocapra americana</I>)
No full textPlease help populate SUNScholar with the full text of SU research output. Also - should you need this item urgently, please send us the details and we will try to get hold of the full text as quick possible. E-mail to [email protected]. Thank you.Journal Articles (subsidised)NatuurwetenskappePlant- en Dierkund
Differences in the organization and chromosomal allocation of satellite DNA between the European long tailed house miceMus domesticus andMus musculus
No full textThe X-autosome translocation in the common shrew (Sorex araneus L.): late replication in female somatic cells and pairing in male meiosis
No full textMental Retardation in A Girl with Turner's Syndrome with An Active Ring X Chromosome Missing XIST
No full textHeterosynapsis and suppression of chiasmata within heterozygous pericentric inversions of the Sitka deer mouse
No full textA paradox revealed: karyotype evolution in the four-horned antelope occurs by tandem fusion (Mammalia, Bovidae, Tetracerus quadricornis)
No full textThe four-horned antelope, Tetracerus quadricornis, is a karyotypic novelty in Bovidae since chromosomal evolution in this species is driven by tandem fusions in contradiction to the overwhelming influence of Robertsonian fusions in other species within the family. Using a combination of differential staining and molecular cytogenetic techniques, we provide the first description of the species' karyotype, draw phylogenetic inferences from the cytogenetic data and discuss possible mechanisms underlying the formation of the tandem fusions in this species. We show (a) that pairs 1-6 of Tetracerus correspond to a combination of Bos taurus orthologous chromosomes that are tandemly fused head to tail, (b) the presence of interstitial centromeric satellite DNA at the junctions of orthologous blocks defined by the crossspecies painting data and (c) that in some instances, residual telomeric sequences persist at these sites. We conclude that the attendant result of each fusion is an enlarged acrocentric fusion element comprising a single functional centromere and two terminal telomeres that, collectively, led to a reduction of the 2n=58 bovid ancestral acrocentric chromosomal complement to the 2n=38 detected in the four-horned antelope.Articl
