Vertebrate evolution was accompanied by two rounds of whole genome duplication followed by functional divergence in terms of regulatory circuits and gene expression patterns. As a basal and ...

(Phys.org) -- An evolutionary leap made at the bottom of the ocean over 500 million years ago gives new insights into the causes of human diseases such as diabetes, cancer and neurological disorders, ...

Those of you who took high school biology may remember the lancelet, also known as the amphioxus. Its simplified body plan is notable for containing a number of features that it shares in common with ...

Probing the mysterious glow of light produced naturally by animals, scientists have deciphered the structural components related to fluorescence brightness in the primitive sea creature known as ...

The genome sequence of a species of amphioxus, an iconic organism in the history of evolutionary biology, opens up a fresh vista on the comparative investigation of chordates and vertebrates. The ...

Lancelets, or amphioxus, are small worm-like marine animals that spend most of their lives buried in the sea floor, filter-feeding through jawless, ciliated mouths. The vertebrate affinities of these ...

This is the head of the marine invertebrate amphioxus (Branchiostoma floridae), magnified 15 times. Amphioxus are the most ancient of the chordates (animals whose features include a nerve cord), ...

Research on the genome of a marine creature led by scientists at Scripps Institution of Oceanography at UC San Diego is shedding new light on a key area of the tree of life. Linda Holland, a research ...

In a primitive marine organism, scientists find photosensitive cells that may be ancestral to the "circadian receptors" in the mammalian retina. Among the animals that are appealing "cover models" for ...