metazoan


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Related to metazoan: Myxozoan, Bilaterian

metazoan

any multicellular animal of the group Metazoa: includes all animals except sponges
References in periodicals archive ?
Anaerobic multicellular organisms exist in present day but their evolution in complexity is very limited compared with those achieved by aerobic metazoans.
To understand the broader pattern of 18S size change, it is useful to look at the evolution of the 18S gene in other metazoan taxa.
For example, molecular dates for the Cambrian explosion, the sudden appearance of all major metazoan phyla in the fossil record -543 million years ago (mya), were between at least 100-650 million years earlier than the fossil appearances of these taxa (see Bromham et al.
Microbiologists, biochemists, and related scientists discuss mobile elements that have colonized the genomes of some medically important metazoan parasites and their vectors, comparing and contrasting them with better-studied model organisms.
The family of metazoan metal-independent a-galactoside-bing lectins: structure, function and molecular evolution.
Transcriptional regulation through Mediator-like coactivators in yeast and metazoan cells.
Metazoan parasites of the graybelly salamander, Eurycea multiplicata griseogaster (Caudata: Plethodontidae) from Arkansas.
Metazoan organisms are easy to individuate on this basis, but a variety of biological entities challenge the concrete notion of individuality; for example, some fungi and colonial organisms which lack obvious boundaries.
Just as we see spontaneous, biological movement in the expansion and contraction of the amoeba, a protozoan, there is a biological reality to expansion and contraction in the human organism, a metazoan with a developed nervous system.