The lowest metazoa we know-namely ,thelower zoophyta (sponges, simple polyps, etc.

Despite this, how CDK mediates cell cycle and developmental transitions in metazoa is poorly understood.

We have first to distinguish the unicellular animals (protozoa) from the multicellular tissue-forming (metazoa).

I also divided the realm of metazoa into two great groups, the lower and higher metazoa.

Sympagic metazoa and diatoms have been studied extensively since they can be identified using microscopy techniques.

So here goes: Jellyfish feed on small protozoa, large metazoa and other small fish in the sea.

In sexually reproducing metazoa, species clearly play this role as causal individuals (see Chapter 8).

These results determine an essential function of CDK in metazoa and identify a developmental role for regulated SLD-2 phosphorylation.

Our data indicate that TRAIP is a master regulator of the processing of incomplete DNA replication during mitosis in metazoa.

The list includes species-specific protein families as well as conserved core components of the ancestral PCD machinery shared by fungi and metazoa.

The tree indicates that the ASF virus topoisomerase II gene was present in the virus genome before protozoa, yeasts, and metazoa diverged.

It is proposed that the various eye-types found in metazoa are derived from a common prototype, monophyletically, by a mechanism called intercalary evolution.

All these animals may be comprised under the general heading of "gut animals," or metazoa, in contradistinction to the gutless protozoa.

To the second great group of the metazoa I gave the name of the coelomaria, or bilaterata (or the bilateral higher forms).

The first and oldest organ of all these metazoa is the primitive gut (or progaster) and its opening, the primitive mouth (prostoma).

By the development of this process, multicellular metazoa arose from the colonies of similar protozoa, and at length culminated in the higher animals and man.