LOOKING DEEP INTO CELL 2: Development Of Multicellular Organisms

     DEVELOPMENT OF MULTICELLULAR ORGANISM

The next step necessary for the evolutionary process of Multicellularity is the " Export- of- fitness" stage. This stage is also similar to the first stage, but this requires that cell work together for a common goal of reproducing more cohesive units, or individuals like themselves and thereby working in a concerted way towards the increase of their fitness. Once this is achieved, a distinct phenotype or form of organism exits.

   Steps such as cell- to- cell adhesion or communication were achieved in plants, animals, fungi and algae. They differs among the major eukaryotic classes, yet an important aspect is that these Multicellular organisms all went through a similar series of steps on their way to becoming Multicellular, functional organisms. So , as a result of this evolutionary activities, Niklas then put forward that " this convergent evolution is well summarized by saying " There are many roads to Rome, but Rome is not what it used to be."

Furthermore, to solve the mystery of how Multicellular life persisted, scientist are suggesting what they called " Ratcheting mechanism." Ratchets are said to be a device that permit motion in just one direction. 

  By analogy, Ratcheting mechanism are said to be trait that provides benefit in a group context but are determined to loners, ultimately preventing a reversion to a single- celled state said by Libby and study co- author william ractcliff at the Georgia institute of technology in Atlanta. Ratcheting also explain the symbiosis between ancient microbes that lead to symbionts living inside cells, such as mitochondria and chloroplast that respectively help their host make use of oxygen and sunlight. 

Having finished reading the write up, you will that the earlier write up before this ( part 1) and this (part 2) is just the introduction to the development of multicellular organisms..... To get full understanding of the process and methods how multicellularity evolve, read the next article..

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