Given what we know, we can confirm that the cell theory states that all cells come from preexistingcells despite the cells in a multicellular organism being so different from one another due to cellular differentiation.
<h3>What do we know about cellular differentiation?</h3>
Cellular differentiation involves the selective expression of DNA.
When only specific parts of the DNA sequence are expressed, and thus only specific proteins are formed, a cell can differentiate.
This allows the cells to specialize themselves despite all of them containing the same DNA.
Over time, this has allowed all cells, despite sharing a common origin, to become vastly different.
Therefore, given that cellular differentiation controls what genes of a cell are expressed in order to allow the cell to specialize itself into a specific cell type, this explains why even though all cells share a common origin, they can all be very distinct.
The main difference between coelomates and pseudocoelomates is the coelomates possess that is included, a ‘true’ coelom as their body cavity whereas pseudocoelomates possess a ‘false’ coelom.
DNA is the molecule that is the hereditary material in all living cells. Genes are made of DNA, and so is the genome itself. A gene consists of enough DNA to code for one protein, and a genome is simply the sum total of an organism's DNA.
When the two different population species interact in such a manner that it is beneficial to each other, then this form of interaction is called mutualism.
