Related Experiment Video
Updated: Dec 18, 2025

In Situ Hybridization Techniques for Paraffin-Embedded Adult Coral Samples
Published on: August 31, 2018
Evolution of Allorecognition in the Tunicata
1Math and Science Program, Soka University of America, 1 University Drive, Aliso Viejo, CA 92656, USA.
Abstract:
Allorecognition, the ability to distinguish self or kin from unrelated conspecifics, plays several important biological roles in invertebrate animals. Two of these roles include negotiating limited benthic space for colonial invertebrates, and inbreeding avoidance through self-incompatibility systems. Subphylum Tunicata (Phylum Chordata), the sister group to the vertebrates, is a promising group in which to study allorecognition. Coloniality has evolved many times independently in the tunicates, and the best known invertebrate self-incompatibility systems are in tunicates. Recent phylogenomic studies have coalesced around a phylogeny of the Tunicata as well as the Order Stolidobranchia within the Tunicata, providing a path forward for the study of allorecognition in this group.
Related Concept Videos
Convergent Evolution
Diversity of Antigen Receptors
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
Diversity of Protists II
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon...
Red Algae

