Constraint and diversification of developmental trajectories in cichlid facial morphologiesEvoDevo - Tập 6 - Trang 1-14 - 2015
Kara E. Powder, Kayla Milch, Garrett Asselin, R. Craig Albertson
A major goal of evolutionary biology is to understand the origins of phenotypic diversity. Changes in development, for instance heterochrony, can be a potent source of phenotypic variation. On the other hand, development can also constrain the spectrum of phenotypes that can be produced. In order to understand these dual roles of development in evolution, we examined the developmental trajectory o...... hiện toàn bộ
Adoption of conserved developmental genes in development and origin of the medusa body planEvoDevo - Tập 6 - Trang 1-15 - 2015
Johanna E. M. Kraus, David Fredman, Wei Wang, Konstantin Khalturin, Ulrich Technau
The metagenesis of sessile polyps into pelagic medusae in cnidarians represents one of the most ancient complex life cycles in animals. Interestingly, scyphozoans and hydrozoans generate medusae by apparently fundamentally different processes. It is therefore unclear whether medusa formation has evolved independently in different medusozoans. To this end, a thorough understanding of the correspond...... hiện toàn bộ
Pattern and process in the evolution of the sole dioecious member of BrassicaceaeEvoDevo - Tập 5 - Trang 1-17 - 2014
Valerie L Soza, Vietnam Le Huynh, Verónica S Di Stilio
Lepidium sisymbrioides, a polyploid New Zealand endemic, is the sole dioecious species in Brassicaceae and therefore the closest dioecious relative of the model plant Arabidopsis thaliana. The attractiveness of developing this system for future studies on the genetics of sex determination prompted us to investigate historical and developmental factors surrounding the evolution of its unisexual flo...... hiện toàn bộ
Myogenesis in the sea urchin embryo: the molecular fingerprint of the myoblast precursorsEvoDevo - Tập 4 - Trang 1-17 - 2013
Carmen Andrikou, Edmondo Iovene, Francesca Rizzo, Paola Oliveri, Maria Ina Arnone
In sea urchin larvae the circumesophageal fibers form a prominent muscle system of mesodermal origin. Although the morphology and later development of this muscle system has been well-described, little is known about the molecular signature of these cells or their precise origin in the early embryo. As an invertebrate deuterostome that is more closely related to the vertebrates than other commonly...... hiện toàn bộ
Unravelling the genes forming the wing pattern supergene in the polymorphic butterfly Heliconius numataEvoDevo - Tập 10 - Trang 1-12 - 2019
Violaine Llaurens, Mathieu Joron, Mathieu Chouteau, Suzanne V. Saenko, Florence Piron-Prunier, Corinne Blugeon
Unravelling the genetic basis of polymorphic characters is central to our understanding of the origins and diversification of living organisms. Recently, supergenes have been implicated in a wide range of complex polymorphisms, from adaptive colouration in butterflies and fish to reproductive strategies in birds and plants. The concept of a supergene is now a hot topic in biology, and identificati...... hiện toàn bộ
Breaking evolutionary and pleiotropic constraints in mammals: On sloths, manatees and homeotic mutationsEvoDevo - Tập 2 - Trang 1-27 - 2011
Irma Varela-Lasheras, Alexander J Bakker, Steven D van der Mije, Johan AJ Metz, Joris van Alphen, Frietson Galis
Mammals as a rule have seven cervical vertebrae, except for sloths and manatees. Bateson proposed that the change in the number of cervical vertebrae in sloths is due to homeotic transformations. A recent hypothesis proposes that the number of cervical vertebrae in sloths is unchanged and that instead the derived pattern is due to abnormal primaxial/abaxial patterning. We test the detailed predict...... hiện toàn bộ