Evidence, Content and Corroboration and the Tree of Life

We examine three critical aspects of Popper’s formulation of the ‘Logic of Scientific Discovery’—evidence, content and degree of corroboration—and place these concepts in the context of the Tree of Life (ToL) problem with particular reference to molecular systematics. Content, in the sense discussed by Popper, refers to the breadth and scope of existence that a hypothesis purports to explain. Content, in conjunction with the amount of available and relevant evidence, determines the testability, or potential degree of corroboration, of a statement; content distinguishes scientific hypotheses from metaphysical assertions. Degree of corroboration refers to the relative and tentative confidence assigned to one hypothesis over another, based upon the performance of each under critical tests. Here we suggest that systematists attempt to maximize content and evidence to increase the potential degree of corroboration in all phylogenetic endeavors. Discussion of this “total evidence” approach leads to several interesting conclusions about generating ToL hypotheses

Finishing the euchromatic sequence of the human genome

The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead

Pop Culture Pedagogies: Perspectives and Possibilities

This panel seeks to promote dialogue to expand, complicate, and articulate our interactions with pop culture texts. Employing a variety of theoretical approaches, each panelist will explore ideologies and issues emerging from the study of popular culture in order to promote discussions and deepen understanding of our engagements across various forms of media, including television drama, southern music, film, and video games. The goal of this panel to generate new understandings and perspectives among diverse individuals engaging with different popular culture texts

Counternarratives of Curriculum in Schools, Neighborhoods, and Communities in the South

Presentation given at the Curriculum Studies Summer Collaborative Conference. In this interactive curriculum dialogue symposium, a group of multiethnic practitioner researchers explore diverse forms of curriculum inquiry (e.g., oral history, fiction, graphic novels, documentary novels, memoire, poetry, comics, etc.) to dive into the life of schools, neighborhoods, and communities in the U. S. South. We particularly focus on the power of counternarratives to contest metanarratives that often portray the South as backward, deficient, and inferior. We explore how critical theory, Black feminist thought, womanism, Black protest thought, Black liberation theology, critical race theory, critical race currere, multiracial or mixed race theory, and indigenous or decolonizing theories empower us to tell silenced and neglected stories of repressions, suppressions, and subjugations that challenge stereotypes of Southern women, Blacks, and other disenfranchised individuals and groups and to examine the forces of slavery, racism, sexism, classism, religious repression, and other forms of oppression and suppression on the life and curriculum in schools, neighborhoods, and communities in the South. The major purpose of this presentation is to share experience of developing diverse forms of curriculum inquiry and to recognize the importance of, and ways of engaging in such a wide array of forms to embody a particular stance in relation to integrity, beauty, humanity, and freedom, to move beyond traditions and boundaries, and to embed inquiry in school, neighborhood, and community life to transform research into positive social and educational change. This is a continuation of dialogue on curriculum in the South