University of Adelaide geneticist Dr Frank Grützner and his team have authored five of 28 papers which appear in two special issues of the Australian Journal of Zoology and Reproduction Fertility and Development.
The articles shed new light on the extraordinary complex platypus sex chromosome system.
“For the first time we have looked at how the 10 sex chromosomes find each other during sperm development in platypus,” Dr Grützner says.
“We discovered that a remarkably organised mechanism must exist in platypus, where sex chromosomes from one end pair first and then they go down the sex chromosome chain, just like a zipper. There is nothing random about it.”
Dr Grützner and his colleagues also isolated and analysed for the first time the sequence of the male-specific Y chromosomes.
“Previously we knew nothing about the Y chromosomes because only the female platypus genome was sequenced. The data we found has given us valuable clues about the evolution of Y chromosomes in all mammals, including humans,” Dr Grützner says
All 28 published articles in the CSIRO journals have arisen from the Boden Research Conference, “Beyond the Platypus Genome”, hosted by the University of Adelaide in November 2008, which attracted researchers from around the world.
The published papers represent a wide range of monotreme research, from genome to field biology, population genetics and captive breeding, evolution to immunology, venom, sperm and milk in both the platypus and echidna.
“I expect these results to make a major impact in the field of monotreme research and mammal evolution,” Dr Grützner says.
“We have entered a new era in monotreme research, where we are seeing a more integrated approach using genomics, biochemistry and field biology to tackle important questions in monotreme biology. This knowledge will also help us conserve these iconic Australian mammals,” he says.Dr Frank Grutzner
Dr Frank Grutzner | Newswise Science News
Fine organic particles in the atmosphere are more often solid glass beads than liquid oil droplets
21.04.2017 | Max-Planck-Institut für Chemie
Study overturns seminal research about the developing nervous system
21.04.2017 | University of California - Los Angeles Health Sciences
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment...
Glaciers might seem rather inhospitable environments. However, they are home to a diverse and vibrant microbial community. It’s becoming increasingly clear that they play a bigger role in the carbon cycle than previously thought.
A new study, now published in the journal Nature Geoscience, shows how microbial communities in melting glaciers contribute to the Earth’s carbon cycle, a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
21.04.2017 | Physics and Astronomy
21.04.2017 | Health and Medicine
21.04.2017 | Physics and Astronomy