Multicellularity has evolved at least once in every major eukaryotic clade (in all ploidy levels)
and numerous times among the prokaryotes. According to a standard multilevel selection …

Red algal systematics is in a state of flux unparalleled since the early decades of this
century. Ultrastructural and biochemical studies are providing features for a revised …

The fine structure of pit plugs was examined in 63 species of red algae representing 34
families. The number of plug cap layers was found to be a taxonomically reliable character …

This paper presents results from the first comprehensive study of hexactinellid tissue
organization by electron microscopy. It is confirmed that the trabecular tissue of …

Publisher Summary This chapter discusses the morphological and cytological aspects of
algal calcification. The deposition of calcium salts may occur either extra, inter, or …

A semi-explicit arrangement of the lower eukaryotes is provided to serve as a basis for
phyletic discussions. No single character is used to determine the position of all the groups …

Intercellular nutrient and signal transduction are essential to sustaining multicellular
organisms and maximizing the benefits of multicellularity. It has long been believed that red …

Plasmodesmata (PD) are intercellular connections in plants which play roles in various
developmental processes. They are also found in brown algae, a group of eukaryotes …

A cladistic analysis of the orders of Rhodophyta is presented. Sixteen taxa and 34
characters comprise the data matrix. Included in the analysis are biochemical and …

The fine structure of pit plugs in 90 species of red algae was examined, bringing the total
number of species in the continuing survey to 153. The organization of plug caps was …