A sampling of developmental biology research advances that have made the notice of news articles and blogs.
The evolution of early animal embryos: conservation or divergence?
Kalinka, Alex T. and Pavel Tomancak. Trends Ecology Evol. 27: 385-393, October 2012. Download free preprint.
Telomere maintenance and telomerase activity are differentially regulated in asexual and sexual worms
Thomas C. J. Tan, Ruman Rahman, Farah Jaber-Hijazi, Daniel A. Felix, Chen Chen, Edward J. Louis, and Aziz Aboobaker. Proc Natl Acad Sci USA, February 27, 2012 DOI: 10.1073/pnas.1118885109
Asymmetry and Aging of Mycobacterial Cells Lead to Variable Growth and Antibiotic Susceptibility
Bree B. Aldridge, Marta Fernandez-Suarez, Danielle Heller, Vijay Ambravaneswaran, Daniel Irimia, Mehmet Toner, and Sarah M. Fortune Science 6 January 2012: 100-104. Published online 15 December 2011 [DOI:10.1126/science.1216166]
A branch of cartilaginous fishes making do without the HoxC cluster
King, BL, JA Gillis, HR Carlisle, RD Dahn 2011 A natural deletion of the HoxC cluster in elasmobranch fishes. Science 334:1517 DOI: 10.1126/science.1210912
Bioelectricity (cell membrane potential) necessary and sufficient to specify eye development in frog embryos
Vaibhav P. Pai, Sherry Aw, Tal Shomrat, Joan M. Lemire and Michael Levin 2011. Transmembrane voltage potential controls embryonic eye patterning in Xenopus laevis, Published online before print December 7, 2011, doi: 10.1242/dev.073759
How does the fertilized egg eliminate sperm mitochondria? (2011-11)
They are digested by autophagy.
S. Al Rawi, S. Louvet-Vallee, A. Djeddi, M. Sachse, E. Culetto, C. Hajjar, L. Boyd, R. Legouis, V. Galy. Postfertilization Autophagy of Sperm Organelles Prevents Paternal Mitochondrial DNA Transmission. Science, 2011; DOI: 10.1126/science.1211878