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
Evolution of the SPATULA/ALCATRAZ gene lineage and expression analyses in the basal eudicot, Bocconia frutescens L. (Papaveraceae)EvoDevo - Tập 8 - Trang 1-18 - 2017
Cecilia Zumajo-Cardona, Barbara Ann Ambrose, Natalia Pabón-Mora
SPATULA (SPT) and ALCATRAZ (ALC) are recent paralogs that belong to the large
bHLH transcription factor family. Orthologs of these genes have been found in
all core eudicots, whereas pre-duplication genes, named paleoSPATULA/ALCATRAZ,
have been found in basal eudicots, monocots, basal angiosperms and gymnosperms.
Nevertheless, functional studies have only been performed in Arabidopsis
thaliana, wh... hiện toàn bộ