Mitochondrial DNA-like sequences in the nuclear genome of the opossum genus Didelphis

Article Abstract:

Mitochondrial DNA (mtDNA) is a popular marker for studying genetic diversity, population and phylogeny. However, it has characteristics that may be a source of error in some studies. A new investigation reports on the occurrence of nuclear mtDNA-like sequences in the nuclear genome of the neotropical opossum species Didelphis (Didelphidae, Marsupialia) The study establishes the occurrence of mtDNA-like sequences in the four Didelphis species and the presence of paralogous nuclear sequences suggests that mtDNA migration to the nuclear genome occurred several times during their evolution.

Biological diversity, Biodiversity, Mitochondrial DNA, Animal genetics, Opossums

---

Heteroduplex mobility assays (HMAs) and analogous sequence analysis of a cytochrome b region indicate phylogenetic relationships of selected Callitrichids

Article Abstract:

A cytochrome b region is analysed using heteroduplex mobility assays (HMAs) with results comparable to those based on DNA sequences, including similar topologies with identical intrageneric, intraspecific and intergeneric relationships, in selected Callitrichids. HMA is sensitive enough to detect a 1-2% mismatch and can distinguish closely related species. HMAs can be used for detecting mismatches in the DNAs of different organisms, determining the genetic distances among them and constructing phylogenetic trees.

Analysis, Nucleotide sequence, Base sequence, Phylogeny, Primates, Cytochromes

---

Gene assignment in the spider monkey (Ateles paniscus chemek-APC): APE-MYH7 to 2q; AR-GLA-F8C to the X chromosome

Article Abstract:

The assignment in Ateles paniscus chamek, the spider monkey, of three human X-linked genes and two HSA 14q genes is reported. The process of karytypic evolution in Ateles was better understood following a comparison with chromosome painting data in A. geoffroyi, a karyotypically similar congeneric species.

Heredity, Spider monkeys

Similar abstracts:

• Abstracts: PEX13 (ital) is mutated in complementation group 13 of the peroxisome-biogenesis disorders. Rare missense and synonymous variants in UBE1 are associated with X-linked infantile spinal muscular atrophy
• Abstracts: Microbial responses to microgravity and other low-shear environments. Novel quantitative biosystem for modeling physiological fluid shear stress on cells
• Abstracts: A putative cyclic peptide efflux pump encoded by the TOXA gene of the plant-pathogenic fungus Cochliobolus carbonum
• Abstracts: The bacterial flagellin gene as a biomarker for detection, population genetics and epidemiological analysis. Flagellin gene and protein variation amongst clinical isolates of Pseudomonas aeruginosa
• Abstracts: Identification of a 29 kDa protein in the envelope of Mycobacterium smegmatis as a putative ferri-exochelin receptor

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.