...-posterior axis patterning. Wnt signaling Axin Sea urchin Anterior-posterior axis Animal-vegetal axis Endomesoderm During embryonic development in most bilaterally symmetrical animals (Bilateria), the establishment of the anterior-posterior (AP) and dorsal-ventral (DV) axes are two early...

... (anterior) or trunk (posterior) identity based on the magnitude of the WNT signal used to induce them. Neural crest WNT dose/magnitude Anterior-posterior axis HOX genes Human embryonic stem cells Neural crest cells (NCCs) are multipotent embryonic cells that are exclusive to vertebrates...

... us with insights into the evolution of deuterostome (see Glossary, Box 1 ) nervous systems. Wnt TGFβ Nodal BMP Dorsal-ventral axis Anterior-posterior axis Lefty Chordin Six3 FoxQ2 Ciliary band Apical organ Ectoderm patterning Neural development...

... for the observed axis defects in Ldb1 mutant embryos. The expression of several Wnt inhibitors is curtailed in the mutant, suggesting that Wnt pathways may be involved in axial patterning regulated by Ldb1 . © 2003. 2003 Ldb1 Wnt inhibitor(s) Otx2 Mouse Anterior-posterior axis Ldb1 (also called...

... . 10.1016/0092-8674(93)90732-6 Chen , C. W. , Jung , H. S. , Jiang , T. X. and Chuong , C. M. ( 1997 ). Asymmetric expression of Notch/Delta/Serrate is associated with the anterior-posterior axis of feather buds . Dev. Biol. 188 , 181 – 187 . 10.1006/dbio.1997.8643...

... have been mainly produced from a unique, spatially organised pool of self-renewing stem cells that accompanies the formation of the anterior-posterior axis. Stocks of transgenic animals were maintained by intercrosses. Mice homozygous for the transgene were detected by PCR analysis of the progenies...

... and potential biochemical roles for Scm protein in PcG repression are discussed. * Author for correspondence 15 02 1996 © 1996 by Company of Biologists 1996 Polycomb group homeotic repression Drosophila anterior-posterior axis zinc finger protein Sex comb on midleg Scm...

... by a common mechanism involving the vab-8 gene. * Author for correspondence (e-mail: [email protected] ) 15 11 1995 © 1996 by Company of Biologists 1996 anterior-posterior axis axon guidance cell migration pathfinding C. elegans vab-8 gene The migrations...

... embryo where it is used for the specification of the four posterior ABxxp-fates. (A) At the 2-cell stage P 1 polarises AB along the anterior-posterior axis. (B) The AB blastomere starts dividing along the dorsoventral axis. The anteriorposterior polarisation therefore is transmitted to both daughter...

...Ann C. Burke; Craig E. Nelson; Bruce A. Morgan; Cliff Tabin ABSTRACT A common form of evolutionary variation between vertebrate taxa is the different numbers of segments that contribute to various regions of the anterior-posterior axis; cervical vertebrae, thoracic vertebrae, etc. The term...

... – 545 . 10.1126/science.1636091 Frohman , M. A. , Boyle , M. and Martin , G. ( 1990 ). Isolation of the mouse Hox 2.9 gene: analysis of embryonic expression suggests that positional information along the anterior-posterior axis is specified by mesoderm . Development 110...

... epithelium along the body axis of the embryo, an early action of regulators guiding gene expression along the anterior-posterior axis of the embryo: an enhancer element in the intron leads to expression in a subdomain restricted along the anterior-posterior axis. This pattern is altered in mutants...

... parasegments, but that in Pc group mutants these factors gain access to regulatory DNA in all parasegments. 07 11 1991 © 1992 by Company of Biologists 1992 Polycomb group bithorax complex homeotic Drosophila anterior-posterior axis Differentiation of segments along...

... Xenopus organizer late blastula induction anterior-posterior axis bilateral symmetry Gastrulation transforms the organization of the cellularized amphibian egg (the late blastula) into the organization of the embryo, with a body axis characterized by an anterior-posterior succession...