Sentence examples for extant class from inspiring English sources
Hence it is conceivable that an ancient class I CO pathway did not completely disappear and that functions of it have been integrated with the extant (class II?) pathway in Tetrahymena.
Subsequent amplification of formin genes, possibly coincident with the expansion of plants to dry land, was followed by acquisition of alternative membrane attachment mechanisms present in extant Class I and Class II formins, allowing later loss of the RhoGAP-like domain-containing formins in angiosperms.
The extraordinary species-rich phylum Mollusca displays a vast diversity in morphology and has traditionally been subdivided into eight extant class-level taxa.
Although there is little doubt about the monophyly of the eight extant classes, relationships between these groups are controversial.
The Phylum Porifera (sponges) is currently divided into three extant classes – the Hexactinellida, Demospongiae, and Calcarea – and one fossil class – the Archaeocyatha [ 1].
A new molecular clock indicates that molluscs had a terminal Precambrian origin with rapid divergence of all eight extant classes in the Cambrian.
Here, we explore SSU rRNA secondary structures from the three extant classes of Phylum Porifera (Grant, 1836), a pivotal, but largely unresolved taxon of early branching Metazoa.
Echinodermata is divided into five extant classes, the Crinoidea (sea lilies), Ophiuroidea (brittle stars), Asteroidea (starfishes), Holothuroidea (sea cucumbers) and Echinoidea (sea urchins).
Chromosome counts were obtained for 997 molluscan species within 124 terminal taxa and included members of five major extant classes (Polyplacophora, Bivalvia, Cephalopoda, Scaphopoda, and Gastropoda) (supplementary table, Supplementary Material online).
This ancestral protein domain architecture is found in diverse myosins from extant amoebozoans (classes XXV and XXVI) to holozoans (class VII and, with some variations, classes XV and X).
We evaluate whether there are extant behavioral "classes" in the form of different courtship patterns, including the propensity to transition from active courtship to attempted or full copulation.
