Now showing items 1-6 of 6
Evolution and development of the adelphophagic, intracapsular Schmidt's larva of the nemertean Lineus ruber
(BioMed Central, 2015-09-28)
Background: The life cycle of many animals includes a larval stage, which has diversified into an astonishing variety of ecological strategies. The Nemertea is a group of spiralians that exhibits a broad diversity of larval ...
Expression of segment polarity genes in brachiopods supports a non-segmental ancestral role of engrailed for bilaterians
(Nature Publishing Group, 2016-08-26)
The diverse and complex developmental mechanisms of segmentation have been more thoroughly studied in arthropods, vertebrates and annelids—distantly related animals considered to be segmented. Far less is known about the ...
Embryonic chirality and the evolution of spiralian left - right asymmetries
(The Royal Society Publishing, 2016-12)
The group Spiralia includes species with one of the most significant cases of left–right asymmetries in animals: the coiling of the shell of gastropod molluscs (snails). In this animal group, an early event of embryonic ...
Cleavage modification did not alter blastomere fates during bryozoan evolution
(BioMed Central, 2017-04-28)
Background: Stereotypic cleavage patterns play a crucial role in cell fate determination by precisely positioning early embryonic blastomeres. Although misplaced cell divisions can alter blastomere fates and cause embryonic ...
Increased taxon sampling reveals thousands of hidden orthologs in flatworms
(Cold Spring Harbor Laboratory Press, 2017)
Gains and losses shape the gene complement of animal lineages and are a fundamental aspect of genomic evolution. Acquiring a comprehensive view of the evolution of gene repertoires is limited by the intrinsic limitations ...
Embryonic expression of priapulid Wnt genes
Posterior elongation of the developing embryo is a common feature of animal development. One group of genes that is involved in posterior elongation is represented by the Wnt genes, secreted glycoprotein ligands that signal ...