multicellular

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multicellular

[¦məl·tē′sel·yə·lər]
(biology)
Consisting of many cells.
References in periodicals archive ?
However, there are certain sets of requirements that must be met in order for multicellularity to evolve.
Once multicellularity arose, animal forms greatly diversified.
"In a sense, the Ediacaran biota may be failed experiments in animal multicellularity," explains Douglas Erwin, a paleontologist at the Smithsonian Museum of Natural History in Washington, D.C.
This may explain the long wait for multicellularity. What is still difficult to figure out is why the oxygen levels rose when they did.
The concept of a consortium of cells living within a biofilm matrix is indeed a form of multicellularity, giving bacteria huge survival advantages that eukaryotic, multicellular organisms enjoy.
This phenomenon of multicellularity has been hypothesized as a factor likely needed for norovirus infectivity (12).
Thus the transition towards an aerobic metabolism at gastrula stage seems to support also the construction that multicellularity has its origin in the anoxic world that is over 2 billion years ago.
Thus, from an evo-ecotoxicologic perspective, the evolution to multicellularity has its origin in the anoxic world > 2 billion years ago.
However, taking up his challenge (Your Views, June 30) to give one example of a genetic mutation which increases complexity: the evolution of multicellularity in a unicellular green alga has been observed and documented (Boraas 1983; Boraas et al 1998).
Cellular specialization is the hallmark of multicellularity.
However, they have not developed true multicellularity. They could be considered as a potential phyletic lineage that aborted, probably because other forms of organization (i.e., the true eukaryotes) arrived first.
Multicellularity comes next, but, Grob-stein pointed out, "individualness" is not established until the possibility of a multiple birth has passed, usually about two weeks after fertilization.

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