单词	multicellular
释义	multicellular /mʌltɪˈsɛljʊlə / adjective Biology (Of an organism or part) having or consisting of many cells.The evolution of multicellular animals from unicellular protists is one of the key transitions of life on Earth.... What caused the delay of over a billion years in the evolution of multicellular animals after the evolution of single cell eukaryotes? Thus, for instance, all the cells in a multicellular organism represent one clone derived from the fertilized egg. Derivatives multicellularity noun ... This supracellular, or organismal, approach towards multicellularity seems to have allowed sessile plants to adapt to life on land and to evolve even within hostile environments. This could have been the origin of both multicellularity and the requirement for cell death in multicellular organisms. Thus it seems likely that the volvocine algae may retain in their genomes more evidence of the pathway that they followed from unicellularity to multicellularity than members of the major multicellular groups do.
随便看	machine shop machine-specific machine-stitch machine-tending machine time machine tool machine-tooled machine translation machine twist machine vision machine-wash machine washable machine word machine work machinima machining center machining centre machinist machinization machinofacture Machism machismo Machmeter Mach number macho

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