It is ordinary to see certain people with the same face and appearance like the same skin complexion while the others have various differences in term of their physical appearances. What makes the differences? How is the process being held? Let us talk about that in this particular moment. It begins with the existence of cells. Cells in our bodies are continuously dividing, growing and dying. Dead cells need to be replaced by new cells. The fact is that all organisms grow and change by cell division.
From what I have learnt in form 4 and form 5, the variation of each individual occurs due to a process that involves cell division in which DNA (deoxyribonucleic acid) replicates only once called meiosis process. Meoisis increases the genetic variation of the population that people we see around us.
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