The Hox genes (also known as homeotic genes) play a crucial role in the development of animals, being involved in the determination of segment identity along the body axis. These genes were discovered in the fruit fly Drosophila melanogaster 90 years ago and have been found later in all animals, including humans. The Hox genes are arranged in the fly genome in a striking manner: they are clustered and their order is the same as that of the body segments they act upon. This organization is conserved in the genome of most animals where the Hox genes are arranged in a similar way as in the fly genome. Its conservation during hundreds of millions of years suggested that this organization must have an important effect on the function of Hox genes, although the cause of their clustering is still controversial.
A research group of the Department of Genetics and Microbiology of the Universitat Autònoma de Barcelona (Spain), led by Professor Alfredo Ruiz, with the colaboration of the Molecular Biology Center Severo Ochoa (Madrid, Spain), The University of Cambridge (UK), and the Children’s Hospital Oakland Research Institute (USA) has found that the Hox gene complex has been rearranged differently in several Drosophila species. The function of Hox genes seems to be conserved despite the rearrangements. Thus Hox gene clustering in the Drosophila genome seems to be the result of evolutionary history more than that of functional necessity. The research will appear in this week’s issue of the scientific journal Genome Research.
The scientists analyzed the genome region where the Hox genes are located in three Drosophila species, D. buzzatii, D. melanogaster and D. pseudobscura. These species possess differents organizations of the Hox gene complex as a result of the splits of the original complex present in the ancestor during the last 60 millions years. They also observed that the dispersion of Hox genes does not affect their expression and consequently their function. Therefore, at least in the fruit fly, the clustering of Hox genes is not necessary for their proper function.
Octavi López Coronado | alfa
Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View
22.06.2018 | University of Sussex
New cellular pathway helps explain how inflammation leads to artery disease
22.06.2018 | Cedars-Sinai Medical Center
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
22.06.2018 | Materials Sciences
22.06.2018 | Earth Sciences
22.06.2018 | Life Sciences