Sentences with phrase «major animal phyla»

We systematically examined the prevalence of Boule homologs in major animal phyla and also the molecular evolution of Boule in two distant bilaterian classes.

The fossil record suggests complex multicellular life emerged about 600 million years ago in a relatively short period termed the «Cambrian explosion,» during which most major animal phyla appeared.

According to Strausfeld, confirmation of this shared ground pattern in the vertebrate hippocampus would suggest that it originated from a very ancient common ancestor likely to have lived about 600 million years ago just before the Cambrian explosion, a relatively short period when most major animal phyla emerged.

Not exact matches

Jellyfish, polyps and the like belong to a phylum called Cnidaria, one of about 30 major groups that make up the animal kingdom.

Moreover, this burst of animal forms led to most of the major animal groups we know today, that is, every extant Phylum.

Given that sexual reproduction is widespread among animals and sperm production appears to be present in all major phyla of metazoan animals, it raised a question whether any male - biased reproductive gene could be exempt from such selective pressure and remain conserved through extended evolutionary distances.

Sexual reproduction in which male animals produce motile sperm often with flagellum is found in all major phyla of metazoan animals [84].

This organization is a complex one, beginning with the entire Animal Kingdom, which is then broken down into many major groups, or Phylum.