Genetic variation is an effect
Onion skin is a plant cell. And your skin cell is a animal cell.
Basically as simple all the structures in animal cell can be found in plant cells. But plant cells has some extra structure and part where doesn't exist in animal cells.
In animal cell, it contains a cytoplasm, nucleus and a cell membrane.
But in plant cell, they have chloroplast, cell wall and vacuole in additional.
The answer is lateralization of brain function. This is the predisposition for some neural functions or cognitive processes to be more prevailing in one hemisphere than the other. The medial longitudinal fissure divides the human brain into two separate cerebral hemispheres, connected by the corpus callosum.
The organelle that temporarily breaks apart so that the DNA can divide up is the nucleus. Nucleus store most of the cell's DNA it is responsible for carrying genetic information. It is also responsible for generating genetic expression to ensure the proper activities of the entire cells.
